Swimming

I really like swimming. I go for swimming three times a week. I swim in a team, we are much there are about 50 of us. I started swimming when I was 6 and I've never stopped  been practicing since. I also like to run going running. I like watching sport at the on TV.

Swimming

I really like swimming. I go swimming three times a week. I swim on a team, we are much 50 that has 50 people. I started swimming when I was 6 and I've never stopped. I also like going running(Could be: to go running; or running; or to run). I (also) like watching sports at on the TV.

For the last two sentences, you could combine them: "I also like to go running and watching sports on  TV."

Swimming

I really like swimming. I go swimming three times a week. I swim in a team, there are more than 50 in the teamwe are much 50. I started swimming when I was 6 and I've never stopped. I also like going running. I like watching sport at on the TV.