I am older than you by over a decade. From my friends, I've seen that the 'natural beauty' of individuals tends to even out as we age. Everyone is more on a level playing field. If you want to present well (and this is not particularly about beauty), you can dress well (use Vinted, take advice, follow Insta people the same age as yourself), always look clean and fresh (wash hair lots, try products, go to hairdressers), wear make-up (tutorials online) and exercise to make yourself feel better. None of us over 50 are thin, young, firm blah blah, but we all look quite nice, well-cared for and good.
You don't need a face lift or Botox to carry on in life, you can if you want and you think it will make you feel better, but it's not some essential thing everyone else is doing and you are not. Out of my friends I know one has had eye bag surgery (very successfully), and a couple use Botox, everyone else is just making the best of themselves.
Now, you don't have to do any of these things to be a valuable person. But if you feel bad on the outside, I tend to feel it doesn't help the inside (in our lookist society), so I've had my teeth done and make sure my clothes and make-up look like 'me'.
It doesn't need to be this drastic- everything has to change/I can't do anything- that thinking doesn't help. Just do a couple of things to make yourself feel better and then go out into the world and plan what you are going to do for the next 40 years (hint, things to do with faces/wrinkles/surgery are usually very boring and doesn't really enhance anyone else's life so don't mistake that for a life's purpose).