My banjo needs a new bridge

So I had lent my banjo out and I just got it back, and I'm very glad to have it, but I need to get a new bridge for it.

I'm not an accomplished musician. I play for my own enjoyment, when I feel like it. Sometimes this causes a dilemma. People think I'm being weird and rude and ungenerous if I don't play for them, but if I do play for them they're embarrassed for me because I'm really that unaccomplished. And no, it's not "not as bad as I think it is" -- I can't even tune to a tuning fork or pitchpipe or other person's instrument, I can only tune the banjo to itself, and then only with great difficulty. I know only a handful of tunes that I learned by ear. I can puzzle out the notes on sheet music, but slowly and with difficulty and it's not worth doing most of the time. But I can have a lot of fun banging away on my banjo.

I can sing in a group, when I find myself there. But my banjo playing is not a group activity.