Will hair loss treatment be effective?

I am considering hair loss treatment and am curious about its effectiveness and available types. Since I am in the early stages of hair loss, I would like to know which treatment is appropriate for my specific condition, whether medication alone is effective, or if it needs to be combined with other procedures. Different clinics offer various treatments such as mesotherapy, PRP, hair loss Botox, stem cell injections, and exosomes; I am curious about the principles and effects of each. I would also like to know which treatments help improve hair thickness and which are more suitable for restoring hair density. I am also curious about how many sessions are typically required to feel noticeable effects and what the recommended interval is. While the ideal treatment depends on the cause and progression of hair loss, I would appreciate it if you could share reviews from actual patients or recommend specific procedures to help me make a decision.