I’ve been wanting to get a hair loss treatment. It’s definitely effective, right?

Lately, every time I look in the mirror, the crown of my head and my hairline look noticeably thin, and I am incredibly stressed about it. I used to be frequently told that I had thick hair, but at some point, it started getting noticeably thinner, and now the amount falling out when I wash or dry it is unbearable. I’ve tried all the highly-rated anti-hair loss shampoos and even taken supplements, but the effects have been minimal.

In the end, I wanted to get a hair loss treatment at a hospital or specialized clinic.

Has anyone actually received hair loss treatments consistently? I'm curious how many sessions are typically required to see noticeable changes, and what the level of pain or side effects is like. Since the cost is quite high, I'm hesitant to make a decision hastily. Are there any hair loss treatments that you tried early and saw results from?