I recently found a glitch that seems useless to me but maybe someone else will find it useful.
If you pick up the phone at the beginning of the game you can press tab and esc quickly one after the other (I do not have a method) eventually the game will run normally and your character will be able to move freely but the pause menu will be open

I managed to recrate the glitch!

The glitches that are really important are the ones that save time because it seems that in this game it no longer seems possible 4:58