Hello! I can help you! ^^ By the way, you should say (or write) "I want my English grammar better." But an even better sentence would be " I need help to make my English grammar better" This is more grammatically correct. XDDD I would love to help you further, if you want! ;)

Hi nice to meet you I think if you want your grammar well, you can buy some grammar books. and I will try my best to help you. By the way,the "grammatic" is wrong. I think "grammatical" is right