I'm learning writing English. Can you help me to find mistake and fix mistake for me, please? Thank you.

This is my writting:
"Each year, my university have organized a competition named Thach Thuc. In a match of Thach Thuc, it has three teams and each team has four person. I have join this competition twice. And the first time I join Thach Thuc was two years ago. My team ware pass the test with average score but we really want to win this competition. We had tried a lot. Each day before the match, we gone to school to practise. The match we played was very excitting but my team not win because the competior was very excellent."