BANG muay thai? Or jiu jitsu?

Ok misc, question.

I need a social hobby of some kind. Doing a martial art of some kind sounds fun. Have an MMA gym nearby that does this BANG muay thai program. Looking it up seems like people think it’s not real muay thai and just a gimmick—anybody have any experience?

Also a gracie BJJ gym in the area. Worthwhile?

Only other places are the typical karate/taekwondo mcdojos.

Would play tennis (hnng tennis sloots) but the closest club is 45 min away which would be a pain. Plus I’d have to get a new racquet.