Will my hair get better if I receive consistent hair loss treatment?

Lately, I've been stressed because the top of my head feels like it's thinning.
I wonder if there will be any actual changes once I start hair loss treatment.
How consistently did you usually need to manage it to see results?
I would like to know if anyone has taken medication or received scalp treatment along with this.
I am also curious about how to maintain it without giving up halfway.
I would appreciate reviews from those who have experience with hair loss treatment.