My English journey

I learned English since I was in kindergarten, but I forgot what I learned
My English grades were ( at the top ) of one of our class(es) (from what) I learn(ed) in elementary school
But when I grew up (in) junior high, my English grade (went) gradually down, I didn't know (why). Maybe (it) is that I was often quarrel(ing) with (my) teacher, haha
And now, I don't know why my English (is) better than before.  I have (a) speech match on next Wednesday (at) our school.   I think that I don't have enough vocabulary and grammar to (do)  this, but I will try it. Hope (I) can get some suggestions from you guys

You are doing very well, just a few changes, I made in parenthesis.  I love your humor.

I wish you the best with your speech match.

Nansea