It's really simple and in active development https://github.com/garethgeorge/backrest. The dev (lead dev) https://github.com/garethgeorge/backrest/discussions is very responsive.
I know many comments have said it but I also wanted to add it just because backrest is what made restic usable for me again. Vorta is a favourite backup GUI but somehow I am finding backrest even simpler (although would have loved it if it was a tiny menu bar kinda app).
Is there something like Deja Dup on Mac?
I am planning to find and add another remote repo now (in addition to b2; and hopefully much cheaper which might be a tough one as b2 is kinda dirt cheap especially for small GBs) so that I can include some more of my less critical files in the additional backup set.