Biel Pla (correction)

Twice a week I have football training with Les Preses team. And once a week we play a match with other teams. Once a week I go to music classes and I play the piano and sing two hours. Once a week, I study in private classes and I often practice maths. I always go to school less saturday and sunday, I love do this.

And: It isn't necessary.
once a week: a lot of repetitions.
Class(es): it is singular, not plural.
in: it isn't correct.
do: it isn't necessary.
have football training: I think the correct is: I training football