How satisfied are you with the hair loss treatment that fills in a thinning parting?

Lately, a huge handful of hair falls out every time I shampoo in the morning, so I get terrified every time I look down the drain. When I look at my parting in the mirror before going out, the white patches on my scalp are much more visible than before, and my depression and sense of loss have reached their peak.
I painfully realized that applying minoxidil daily or using expensive functional shampoos for hair loss wasn't enough, so I started looking into hair loss treatments offered at clinics. I heard that they strengthen hair roots by directly injecting nourishing ampoules into the weakened scalp, but there were many reviews saying that it hurts much more than expected because of the needles.
I would like to know if the satisfaction results of the hair loss treatment are high enough to compensate for the pain of enduring tear-jerking suffering and visiting the hospital multiple times. If there are people who have personally seen the fine hairs on their hairline thicken or new, black baby hairs growing along their parting, I would like to gain great hope.
I am also very curious to know if the number of hairs falling out in the sink decreases noticeably after consistently visiting the clinic for hair loss treatments a few times. Since this is a long-term project that requires a significant amount of time and money, I think it would be best to hear honest opinions from those who have experienced it regarding satisfaction before starting.
Lately, I’ve been feeling incredibly anxious and rushed after hearing the frightening advice that I need to start professional care as soon as possible while my hair follicle cells are still alive. Please, without hesitation, share with me the real stories of how those who have successfully preserved their precious hair overcame this, as well as tips on choosing a friendly clinic!!