ボクシングや格闘技を観るのが好きです。って英語でなんて言うの？

"ボクシングや格闘技を観るのが好きです。" - I like watching boxing and martial arts. - I like to watch boxing and martial arts. 「ボクシングや格闘技を観るのが好きです。ルールがシンプルだし試合時間が長すぎないから。」 I like watching boxing and martial arts because their rules are simple　and match time is not so long. ->I like to watching boxing and martial arts because they have simple rules and their matches aren't very long.

I love watching boxing and martial arts, because the rules are simple and the matches don't last too long. the rules are simple: スポーツ全般のルールについて話す場合、the rules の方がより一般的です。