Do I have a receding hairline at 17?

[Karnan]

Do I have a receding hairline?
Overall, my hair is still incredibly coarse and thick, but in the last 3 years, my corners have been giving away and I'm worried this will eventually lead to balding. It sort of has that M-shape that many people talk about.

This picture is the most recent one I took a few days ago


This picture was taken last March (side-view)