you can just directly ask on nostr if anyone knows of some good forum style nostr frontends. this is a very in-demand type of client and lots of people are already interested in getting one. here’s an example of a conversation where people asked:

njump.me/nevent1qvzqqqqqqypzpm0rm9thwnjat3ukvj6m2…

try to be more open minded. it does not have to be similar to reddit with a voting system. it could be more like a simple bulletin board or a traditional web 2.0 forum as well.