How to say, “In Chinese" in Chinese
你可以给我说用中文 is a little weird, you can change the order to 你可以用中文给我说. And you could just say 你可以说中文 or 你可以用中文说.

你可以把中文给我说 is wrong, it means You could say Chinese to me, not You could say sth in Chinese, Chinese become the object of say here, not the method. You could say 你可以用中文把xxx事情说给我.