A little bit of hair loss on both sides of the hairline on the forehead...

I have a lot of hair and black hair.

Right now, I have more hair than others, but I feel like it has thinned significantly.

But... both sides of the hairline?? The very top part of the M shape? Both sides are thinning out. ㅠㅠ

Is this hair loss?

I'm really worried... How should I take care of this, and what kind of procedure should I have in the future?ㅠㅠ