At your rating the openings are the least of your concern, there are many things to learn and improve before you touch opening theory. Again considering your rating the best thing is to explore, try everything under the Sun and see what you like and don't like. It's easier to switch around now then later and the varied experience will do you good.
Is the Sicilian Defense the most dynamic opening for black?

Wouldn't the use of openings function as a facilitator for familiarizing one's self with tactics, strategic positioning, and tempo opportunities?
An opening that is dynamic with a high margin for error would be the safest bet, which I'm assuming the Sicilian is not. Mirroring white makes me feel like I have little influence, but I'm likely wrong.
With your logic, wouldn't you recommend I stick to a main and alternative opening just to consistently keep the game even as we progress into the middle game?
If so, would I just flip a coin and pick an opening, or is there no harm in playing a lesser expected opening such as Pirc or Indian Game?
Thanks.

Wouldn't the use of openings function as a facilitator for familiarizing one's self with tactics, strategic positioning, and tempo opportunities?
An opening that is dynamic with a high margin for error would be the safest bet, which I'm assuming the Sicilian is not. Mirroring white makes me feel like I have little influence, but I'm likely wrong.
With your logic, wouldn't you recommend I stick to a main and alternative opening just to consistently keep the game even as we progress into the middle game?
If so, would I just flip a coin and pick an opening, or is there no harm in playing a lesser expected opening such as Pirc or Indian Game?
Thanks.
No, I would recommend you explore and get experience in many different positions so you get acquainted with different tactical and strategic ideas and positions which will serve you long term.
You can play the Pirc if you want but it will just go over your head, it's a difficult opening to play. Maybe the Scandinavian would be more up your alley.

I'd recommend that you learn openings in the most common variations but not study it too deply. but after analyzing a game you can also analazy the opening with chessable or a book. chessable has some nice free stuff. also about the accelerated dragon.
the approach just play chess should only be followed by children. If you are an adult i'd take another approach

Sadly, I'm not talking about theory / book moves, but reactionary principles. I just can't think deeply enough yet.
White and white openings give me much more confidence, but it could be a facade of thinking I decide the subsequent moves and patterns we will face.
I want to get comfortable and familiar with openings that lead into comfortable and familiar outcomes. Maybe with more time I can carry more influence from the start.

Early in my OTB career, around 1200 - 1300 over-the-board rating, I made the same decision... playing the Sicilian Najdorf as Black (and an occasional Pirc as well) and the King's Indian Attack as White. Naturally everybody told me that I was too weak to play those openings.

Chess Openings Resources for Beginners and Beyond…
https://www.chess.com/blog/RussBell/openings-resources-for-beginners-and-beyond
https://www.chess.com/blog/RussBell

@RussBell I see you post that very message to many threads, but which link of the dozens provided are you suggesting?
I know you're not just aimlessly advertising your blog, but have you anything personal to add?
I'd love to hear from someone who's parsed through so many resources and who practices what they preach, just as @blueemu has.

I've learned one thing. At our level, the outcome of our games is decided, for better or for worse, by the mistakes and blunders we and our opponent make in the middlegame and in the endgame; exiting the opening with an advantage, or in comfortable positions, has little or no effect on the final outcome, for us.
One more thing: given the unpredictability of what an opponent of our level does, what comes out of an opening is very rarely what you expect, so rely on the type of play that should theoretically result from this or that opening is quite useless. This has been my experience.
Maybe I'm wrong, but in my opinion choosing one opening or another for us is rather a psychological question; in any case, it makes sense at best to think in very, very general terms (for example, I'm not comfortable in closed positions, so I never play 1.d4).
As for the links indicated by @RussBell, take a look at them, even if you don't know exactly where: in any case you will find something useful there. You learn from everything.

I've heard from the Chess loremasters that, aside from Accelerated Dragon variation, the Sicilian should be avoided by beginners because it is a big boi opening with some big boi responsibilities.
I like to be quirky and asymmetrical whenever possible, so when faced with a perfectly symmetrical opening kind of rubs me wrong.
What other 1.e4 and 1.d4 responses can lead to some of the most savage and ruthless retorts my ~400 rated opponents have yet to face?
Pirc opening seems obscure, close, and powerful, but many openings I look into that are not 1.e4 e5 or 1.d4 d5 seem to be deterministic initiatives for counter-attacks at the expense of space and central control.
If I choose such an opening, must I follow through accurately or are there lesser played openings with more margin for error?
i dont know about Sicilian should be avoided by beginners, but from 900 to my current rating i mostly play 1.e4 c5 as black which is Sicilian defend. i choose to play 1...c5 bcoz i bored with 1.e4 e5 and want to experience new things.
i can't answer question about "follow through accurately or are there lesser played openings".
what i can offer is an advice to stick on simple early move like 1.e4 e5 or 1.d4 d5.
then on your next move, move your chess pieces while try to achieve: control the center, eat/threat enemy hanging piece, defend your piece, develop minor pieces, or just move at square that guarded by your other chess piece.
for example if your play as white and get a game with 1.e4 e5. you will find that one of effective move is 2.Nf3 why? because this move do 4 things on single move, that is control the center, threat enemy hanging piece, develop minor piece, and move piece into guarded square.
if you still insist on learn chess opening, maybe this video will give you insight about chess opening. skip to minutes 20.25 if you doesnt like too much talk

i dont know about Sicilian should be avoided by beginners, but from 900 to my current rating i mostly play 1.e4 c5 as black which is Sicilian defend. i choose to play 1...c5 bcoz i bored with 1.e4 e5 and want to experience new things.
Right, I guess you had no time to get bored in the following game (plus many more others as well).
https://www.chess.com/analysis/game/live/76551140107

Right, I guess you had no time to get bored in the following game (plus many more others as well).
yeah, i have plenty quick defeat like that:
https://www.chess.com/game/live/76032625173
https://www.chess.com/game/live/74640848257
https://www.chess.com/game/live/72801967171
https://www.chess.com/game/live/71710449733
and couple others..
but what the point of bringing this things bro?
instead answering thread/original post question, you just focus on my game

from a human, i would recommend learning e5 agianst e4 and d5 agianst d4, i can give you a basic opening rep
c5 is very complicated, you can learn it if you want tho

What I've heard myself is that it is futile for beginners to be obsessed with openings, as the decisive factor in 99,5%+ of their games are blunders (plenty of them in each and every game), and blundering is definitely not cured by openings' study.

Right, I guess you had no time to get bored in the following game (plus many more others as well).
yeah, i have plenty quick defeat like that:
https://www.chess.com/game/live/76032625173
https://www.chess.com/game/live/74640848257
https://www.chess.com/game/live/72801967171
https://www.chess.com/game/live/71710449733
and couple others..
but what the point of bringing this things bro?
instead answering thread/original post question, you just focus on my game
The point is that since there is no opening which is blunder-proof, your "success" as Black with the Sicilian is more or less an illusion. When playing against a beginner, you can well win comfortably even with something like 1.e4 a5, or 1.e4 h5.
I've heard from the Chess loremasters that, aside from Accelerated Dragon variation, the Sicilian should be avoided by beginners because it is a big boi opening with some big boi responsibilities.
I like to be quirky and asymmetrical whenever possible, so when faced with a perfectly symmetrical opening kind of rubs me wrong.
What other 1.e4 and 1.d4 responses can lead to some of the most savage and ruthless retorts my ~400 rated opponents have yet to face?
Pirc opening seems obscure, close, and powerful, but many openings I look into that are not 1.e4 e5 or 1.d4 d5 seem to be deterministic initiatives for counter-attacks at the expense of space and central control.
If I choose such an opening, must I follow through accurately or are there lesser played openings with more margin for error?