I suddenly lost all my controls

what should i do

It happens. You saved a backup right?
Tictacs>Controls> down in the bottom left corner > “import from file” > “lastlogin.blk”
You can also try some of the ones in update folders that are long strings of numbers if that doesn’t work.

Just make a new scheme and tweak it until it’s good enough. On xbox I can instantly make a new control scheme for mouse and keyboard, or for my controller. Then I just change a few buttons and the sensitivity and it’s ready.