>only liked martial arts as a sport growing up
>as an adult have had knee problems (ACL, MCL)
>have tried to continue martial arts but have blown my knees previously and now realise BJJ/MT is just going to result in that again
>need another sport so I can meet people and not be a shut-in

Surely others are in this same situation, i.e. don't like team/ball sports, prefer something like martial arts but can't do it anymore

What sport should I do?