I made a hard choice when very very young, never loan money.
I give it....but never loan it.
I would ask the person to tell you 'why' they can not pay it back.
It also depends on the amount.
Anything under $150-$200....I would forget about it if they are dirt poor.
But! I would never loan again, because that becomes a problem for them to lean on you and others again.
If they are family, I would let it go.
If a very dear friend let it go.
But! just never lend again, and we all learn from mistakes.
If you find you can not let it go....then small courts can help you with advice to recover it.
You also can ask that person to 'work' it off, but they have to be willing.
Keep communication open, but for me....I would walk away, and not deal with them again.
Some people do this kind of thing over and over to people, so you have to work it out 'if'
you wish to stay in touch with them later.
It is a hard problem.