How do i improve

I am the boy on the other side. The man playing with me is a really good player and is going easy on me really.

I am realtively new to badminton and am still in the learning phase. I ussualy play a lot of doubles and dont have much of an idea on how to play singles.

I have seen all of the guys here are quite professional. I would really appreciate you guys if I could get some help.