Alright, after a fuckton of searching, I found this page:
https://tvservicemenu.blogspot.com/2009/03/tcl-t2111a.html
Basically, you hold down Volume Down on the TV itself and at the same time on the remote press "DISPLAY/DEL."
Alright, be careful not to fuck around too much! Playing with some settings made the TV pitch black, but undid it with volume up.
If you left the menu, then god fuck I dunno how you would fix it tbh.
https://tvservicemenu.blogspot.com/2009/03/tcl-t2111a.html
Basically, you hold down Volume Down on the TV itself and at the same time on the remote press "DISPLAY/DEL."
Alright, be careful not to fuck around too much! Playing with some settings made the TV pitch black, but undid it with volume up.
If you left the menu, then god fuck I dunno how you would fix it tbh.