My parting is thinning, so I'm considering a hair loss treatment. Please tell me the benefits!

I feel like I'm losing so much hair lately that I just sigh every time I look in the mirror. I'm still young, but my parting looks thinning, so I've tried taking supplements and changing my shampoo, but nothing really helped. That's why I'm considering getting a professional hair loss treatment. I've heard that treatments like mesotherapy and exosomes are very effective; what are the benefits of these?
I am curious if injection-based hair loss treatments help thicken hair by improving the scalp environment. I am too scared of hair transplants, so I want to know if receiving a treatment in the early stages for management definitely reduces hair loss. If anyone has undergone hair loss treatments due to concerns about the crown or parting like me, please give me some advice. I really want to have a healthy scalp!