He is not even fluent in his mother tongue. OR He is even poor at speaking his mother tongue [closed]

Question

He is not even fluent in his mother tongue. OR He is even poor at speaking his mother tongue.

Which one is correct? If I wrong, What would the correct sentence be?

Thank you.

Answer 1

The first one is better. The second one should instead be "He is poor at even speaking his mother tongue". But it still sounds a little unnatural.