Tetris Self Play mode in JavaScript

hello everyone I previously coded Tetris in JavaScript it works fine and I wanted to make an algorithm that plays it it turns out to be more challenging than I thought and the end result is a little disappointing it barely reaches 20 lines on its good attempts that I was not even going to make a video showcasing it but it took more code and time than I wanted but here it is anyway this is its 48 line record and sorry for the screen saver kicking in at some point of course the website and code links are

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