I'm 17000 and my god I can't even reach 1500 on chess .com
If youre talking about this game:
https://www.chess.com/livechess/game?id=2714575561
You made to many pawn moves.
You put your pieces on bad squares.
You did castle.
You hung material.
You missed simple tactics.
You didnt follow opening princples.
What did you expect to happen?
Why do 1400 players play like 1900?