understanding opennings

hi,

Is openings basically moving 2-4 certain pieces first then develop from there?

In the video they say "the french defence pawn structure" then goes deep into it quickly, at the moment it's hard to play openings because I'm elo 200 and most players I played against bring out their queen early so if they play e3, I play b6 to block the attack

Openings are names for specific move sequences from the start of the game. Some are 1 move deep, some are 10+ moves deep.

At your level, don't worry about openings too much. Learn opening principles, and aim not to hang pieces or a checkmate.

Just choose some basic opening variation you wish to play, and when the opponent allows it, go for it. For instance if you wish to play Ruy Lopez, just learn what that is - those 3 moves for white and 2 moves for black (1.e4 e5 2. Nf3 Nc6 3.Bb5) and just play that position when you reach it. Nothing more than that. You don't have to play Ruy Lopez, it was just an example.

Of course when you get something else, follow opening principles and simply play chess.

For instance, You play your first game, and let's say you play Ruy Lopez against after 1. e4 e5 2. Nf3 Nc6. But let's say the opponent plays 1. ...c5 (Sicilian defense). For the first game you might not know what to do. You just play in accordance with opening principles. After the game, you just decide on how you wish to approach it more concretely. Again learn just a few moves and play from there.

That way you will build slowly, but surely. No point in learning some 15 move sequences when you will never get them in your games. Your opponent doesn't know too much about openings either, so in many games you will get somewhat unique positions.

Chess Openings Resources for Beginners and Beyond...

https://www.chess.com/blog/RussBell/openings-resources-for-beginners-and-beyond