Nice one! At first I wanted to make a Tetris game too but then I hit a wall, coding a Tetris game is surprisingly hard! The art looks good and t-spins kinda work most of the time, that's satisfying, kudos
I couldn't get more than 2600 points though, I don't know how you spawn your blocks but it seems kinda random, and sometimes there's just nothing good that shows up. Tetris games usually fix this by the random bag method: all the pieces are put in a bag and then shuffled, then we start emptying the bag. Once it's empty we put back the pieces and start over again. I don't know how you made your spawning system but it could be an easy fix