My hair on the crown of my head is thinning, so I would like to inquire about hair loss treatment.

Hello. Recently, I have been concerned because the hair on the crown of my head has noticeably thinned and the amount of hair loss has increased. I am stressed because I can see my scalp every time I look in the mirror. I am writing this because I would like to receive professional hair loss treatment at a clinic before it is too late. If I receive treatment even in the early stages like my case, can I expect my hair to become thicker or fuller again? I am curious about the types of hair loss treatment programs typically offered. I would also like to know the level of pain associated with treatments such as injections or lasers, as well as the approximate duration of the procedure. Additionally, I would appreciate it if you could let me know how many sessions are usually required to visit regularly to see results. I would like to visit sometime this week for a detailed diagnosis.