I've heard the katana mini is good. When I was looking for an amp I saw a lot of recommendations saying that the best amp under $200 is a used katana 50 mk2 but I couldn't find one that cheap. I was ultimately gifted a katana 50 mk3 by a relative and like it, though it's more expensive.
Another option is using a cheap audio interface like the scarlet solo and using a DAW or something like guitarix on a computer. I did that before I got my amp and it was mostly fine in linux, but I had issues with unplayable delay in windows that I never managed to resolve.