Stuck in 200s
Openings aren’t going to help you at that rating. You need to learn the fundamentals of chess first. At most, learn opening principle and work on your thought process and improving your ability to see how all the pieces on the board are interacting. If you’d like some help with it, send me a message and we can try to connect sometime in a Chess.com classroom. I’m not a coach but happy to help get you moving forward with your chess a bit.
Improving Your Chess - Resources for Beginners and Beyond
https://www.chess.com/blog/RussBell/improving-your-chess-resources-for-beginners-and-beyond
Use your time and think. Don't play random moves.
This was your last rapid game:
https://www.chess.com/game/live/121638243344?username=tanman715
You won a rook on move 9-10, so at that point you're totally winning. Your opponent decided to throw a knight in the garbage can as well with 12. Nxf7, which you can just take. Instead, after just 4 seconds (??) you decided to take with the queen, losing the queen.
Your opponent ignored the queen, so you are super-winning again (trade queens, win another piece). What you need to do is think and try to find the best move. But instead of that, you spent 6 seconds (??) and decided to throw away your queen again. This time your opponent took it, and took everything, and mated you.
This was a 10 minute game, but you only spent 2 minutes. Don't do that. Don't play random moves very fast. Use your time and think.