looking for a sport

Hi all,
I used to swim at a very competitive level, 4 hours a day. Since my accident limited controlled movement in my left arm and none in my hand (was previously my dominant arm). I also wear a full arm brace with a an ajustable setting allowing me to move my arm in a controlled way. Or have any feeling in my left arm whatso ever. Ie learning from the begining. Slooowwwwllly.
I want to participate in an aerobic sport again an eventually at a high level. But at the moment it cant be anything that needs use of both arms, or risk of being knocked etc, also just running long distance isnt currently an option due to the weight of my arm brace (its metal) and heavy. iv had to wear it for 3 and a half years so far with no sign of stopping soon.
Anyway some advice on various sports or maybe adaptions or personal experience would be greatly appreciated,
Thankyou

how about diving sweety? you just have to learn how to do it without making a big splash

I can't get my arm brace wet or take it off. Plus iv got to much metal etc in my shoulder an elbow the high impact would wreck it . I only know this because I suggested this to my surgeon and physio. They werent impressed lol

how about softball?

How about tennis? or table tennnis

Thanks guys, just got to finally accept I cant swim anymore