do you think that t..... are good openings for an elo 450?

Hi guys, I'm a 470 ELO, I actually play the queen's gambit and the ponziani when I'm white and when I'm black I usually play the caro-kann and the Sicilian defense, I want to understand if these openings are good or no.

They are perfectly fine. As you progress and play better opponents your knowledge of the openings will have to grow deeper. But that is true of everyone.

First of all, pick one and stick with it. I’d personally recommend the Queen’s Gambit and Sicilian, but no matter what, you want to have one opening as White (in this case you’re either playing 1. e4 looking for a Ponziani or 1. d4 looking for a Queen’s Gambit) and one defense against e4 and d4 as Black (in this case you’re either playing the Sicilian or the Caro-Kann) but what do you play against d4?

Select only one of each. They are very theory heavy all of them. If you like the Sicilian then select the 1.d4 QG as white so you do not have to fight your own Sicilian. Black against 1.d4 is not easy; perhaps QGA.

hello l want to learn chess pls

Keep listening to us, grasshopper, and you will learn a lot!

Hi! I would recommend narrowing your opening repertoire to 1.e4 as white, and only one defense against 1.e4 (keep either the Sicilian or the Caro-Kann, both are perfect but pick only one)- If you narrow your repertoire, you can learn the remaining openings more deeply and also have time for other chess skills developing activities.

I have a blog with some post on opening repertoire. See links below:

https://www.chess.com/blog/maafernan/openings-for-beginners

https://www.chess.com/blog/maafernan/openings-for-intermediates

Good luck!

Great repertoire, but I would narrow it down to 1 option each. I would say the Queen’s Gambit for white (it’s generally known to be better than the Ponziani), but you can choose either for black.

that advice is your username but remove the “Ultimate-“ and the “talker”

l really love chess

They are good openings. People are saying to stick with one for white so if you do so I would say stick with queens gambit.

I disagree

The “bad repertoire” part, sorry I kinda worded it wrong

of course e5 and d5 are good

Fair enough 😊

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Hi, I'm 585 elo and I like the scotch. It's good opening for users who like to get their queens out quickly. And for the middle game scotch allows for queen-bishop checkmates.

Start off by learning opening principles and middle game concepts and tactical patterns

In my opinion, early in learning chess the important thing is to get experience with tactics and open games. 1. e4 tends to lead to that more often than 1. d4 (note I said tends ), so I would suggest going with that. Then, as PotatoesAndChess suggests, don't worry too much about learning specific opening theory just yet, rather concentrate on understanding and following good opening principles (pawn to the centre, as in e4, knight(s) before bishops, don't keep pushing pawns or moving the same piece multiple times, so don't put your pieces somewhere that they can just be immediately attacked by a pawn forcing you to move it again, and finally, it is important to develop your pieces off their starting squares and to get castled before starting to attack.) Eventually you will want to learn an opening, and when you do, make sure you examine the "line" you are learning and see how it meets those principles. 
But for now, concentrate on being able to force checkmate with a King and Rook (or Queen) against a lone King, and how to use your king to march a pawn to the far side to get a new queen. Those shouldn't take too long to get down so that you can make good moves without too much effort.
Then focus on reducing any "board blindness" blunders (i.e. oops, left my Queen free for the taking; or Ooops, missed the fact that my opponent left their Queen for me to take, etc) by playing slow games (10 minute games type thing, and use the time to make sure you're not missing something like the above). Work on using pins (and recognizing them; when you can pin a piece and when your opponent can or could pin yours - and how to get out of it or prevent it), spotting forks (again both ways), checks (can you check them and reveal an attack on an undefended piece and maybe win it? Can they do that to you?).
Once you've established those as habits, then start looking more closely at your openings. I tend to recommend the Italian (1. e4 e5 2. Nf3 Nc6 3. Bc4 ...) as a starting point as it is very principled, still played at top levels, and there are lots of other openings that you can add that are of a similar starting idea (i.e. Scotch Gambit, Evan's Gambit, Moeller Attack, Bird's Attack after 3. ... Bc5; and Fried Liver type variations after 3. ... Nf6). Also, at that point, you will be learning Black's responses, so remember when you're studying openings you should study from both side's point of view!