Wondering if I'm losing my hair

[drowned]

20 years old, noticed what looked like thinning hair probably about 6 months ago. Didn't take any pictures, but it looks like it's gotten worse.

I used to have long hair, but buzzed it after getting paranoid - the attached pictures are 4 weeks from a buzz with a No. 1 guard.

Pics:
https://imgur.com/a/kt7yek3
I took pictures with both wet and dry hair, and included some from a few years back - looks to me like the widow's peak is more pronounced, but with the angles you can't see much else.

Any thoughts? I'd like to grow my hair out again, but if it's thinning then I'm just going to stick with the buzz.

[BaldBearded]

That does look like a thinning crown.