We tend not to lend money, as realistically, someone who needs to borrow, is unlikely to be able to pay it back, unless it’s a question of just filling a gap until money comes through. We just give it, and don’t expect it back. So everyone is relaxed, and it’s a bonus if it is repaid. This is usually our children, but there are a couple of friends we’ve helped, particularly during this pandemic. They can’t work, and other bills will take priority once they can.
I would write it off if you can, but don’t lend to them again.