I am curious about the meanings of '말하기' and '연습해도' in the sentence.

Hello, I am having difficulty understanding Korean sentences. The sentence I am curious about is '한국에 말하기 연습해도 괜찮을까요?' First, I would like to know what role the '-기' at the end of '말하기' plays. This '-기' is used to create a noun form and is mainly used to nominalize the verb '말하다'. I am also curious about the meaning of '-해도' in '연습해도'. The '-해도' is an expression used to ask if it is okay to do a certain action. I would appreciate your advice on whether this expression is natural or if there is a more appropriate expression. I would be grateful if you could help me understand the sentence better and use it naturally in conversation.