Leaderboard

You can see in the pic the lower cable is slightly pulled. I'd loosen both off and make sure the brake arm moves freely. If it moves freely, then look at the cable. I'm assuming the lower one is a hard line that goes to the foot brake? Is it slightly depressed? Maybe some lube and everything that moves and it'll come back to life. either that or the rear shoes are so worn that the cam is stuck between the shoes.

Thats my Covid beard aha

You should start by removing the cable and see if it's seized - that's the most likely culprit.