Why do a lot of people regret starting with Minoxidil?

[Saitama314]

Hi, I'm a 21 years old guy who is struggling to decide if I should start with minoxidil or not?
I started losing hair about 5 years ago and I'm already using keto shampoo, biotin an saw palmetto pills

I would really like to try minoxidil but I'm afraid because I read so much negative comments about the stuff... So why do people stop taking it? And why do they regret starting?
Note that I would only use it once a day at night to prevent side effects etc.

Thank you for your help and time