Is hair transplantation okay?

Since my mouth is small and thin, I pay a lot of attention to eating.

So, my hair has become less prone to falling out and stronger, but there's no way to change my natural hair density. I have a wide forehead and uneven sides, so I'm interested in hair transplantation, but I'm worried whether it will remain okay in the long run.

Has anyone tried hair transplantation?

I am wondering if the follow-up care is being properly managed.