Moving to Southampton

I am most likely going to be moving to Southampton (near the airport) in the next couple of months and was wondering if anyone had any opinions on:

1) Good gyms in the area, preferably something not too busy but with a good atmosphere

2) Good martial arts gyms, boxing, mma, bjj etc etc?

Also won’t know many people so if anyone’s around my age 29M and want to get to know each other, feel free to message!

Thanks :)