Is my scalp normal or is my hair thinning??

ca

I can’t tell if my scalp is normal or if my hair is thinning. I used to have really thick hair, but after college and years of ED’s, it’s gotten thinner. I still have a good amount of hair (as seen in photo three) but I’m scared my scalp is too wide?? What do I do?? Or is it normal? Please help lol (my hair is wet in these photos, not greasy lol)