I'm thinking of getting scalp treatment because of the smell and itching on the top of my head.

Lately, the top of my head gets oily quickly and sometimes itches, so it bothers me.
It hasn't been long since I washed my hair, but I think my scalp smells, and some dandruff falls off when I scratch it.
It seems like I'm losing a lot more hair than before, so I'm wondering if it's because my scalp isn't in good condition.
Has anyone tried scalp scaling or scalp care in this situation? I'm curious if the itching or oiliness actually decreased!