I'm still young. Can I get botox or a face lift?

Hello, I'm a 24-year-old male.
 I don't have many wrinkles yet,
 but I got some wrinkles between my eyebrows after I served in the military
 ... I think it will get worse, not weaker, and my face is sagging a bit, including under my eyes.
 
I think botox or filler would be the best way to improve these areas, but... this isn't something that can be done with a single procedure. Some say that botox can get heavy and make your eyes sag after you use it, and they say that the hyaluronic acid in fillers disappears, but it's not 100%, so it remains... So I don't know if it's better to just leave it alone, or if I should prevent wrinkles and sagging skin now and think that it's too late to do it after they appear. Has anyone had it done multiple times...?? I don't really know what to do ㅠㅠ