PRP hair loss treatment - the procedure didn't work

I started my treatment in May 2023,In hope to gain more hair in my crown area,Unfortunately after spending $500 each month and after bearing pain in head for 6 sessions for 6 months then did follow up sessions too 3monthly and 6monthly but didnt see any hair growth on my crown area unfortunately. I still see baldness n thinnnes there. Only diffrence I saw was less hairfall in shower otherwise I had same hairfall while combing my hair,now I dont take any spironolactone or do PRP anymore n my hairfall is back to where it was.I feel like the whole year of $500 each session went into drain,I would never recommend anyone to go for PRP EVER. Dr. Saber was nice and staff was nice too but only drawback is no one garranty about your results. They just do the procedure as it works sometimes but never tells you clearly if it would work or not? They never recommend that I should go ahead or not if its not working.Doctor will say ok will add more of ingredients along with my plasma then might work? Like experimenting? The procedure of PRP done on my never worked. Doctor never accepted that its not working. I honestly Didnt see any regrowth ever which was my goal to spend all that hard earned money and Goal never achieved. Please never do it.