Hi, i am looking for a new martial art to study ,mainly as a medium for releaving stress and building confidence.

A year ago i quit judo because of school dedications but have decided i want to start a new martial art, but after 2 years judo really didnt click with me.

I am 17

6ft tall
13 Stone
Muscly

I would like a change from judo but maybe still a martial art with grapling involved,

Any advice would be great