How to solve receding line?

Hi there!
I am 21 years old and I have receding line (level 2-3); mostly on the lateral sides.
I don't want to use medications (I used Minoxidil on the past and I had problems; and I don't trust Finasteride...). So I have made research of other solutions which can give results with more security.
I have read that hair trasplant should be made on people with more than 30 years old because I will get balder and it would not make sense, so I guess this is not an option...
Is there another option for receding line?
I have thought that maybe, I could do hair trasplant on lateral sides and, when I get bald in the medium part in the future, to use a hairpiece...

Give me some advice me, please; I have low experience on this.

You're only realistic option is finasteride.

Without it, you have a tough road ahead of you.

No ethical doc will give someone your age who hasn't stabilized their loss on a fin a HT.