I am a retired fitness instructor, and still do weight training in the gym and exercise every day. So it was hard for me to accept that there is no getting around the fact that we lose muscle tone as we age, which we can improve on just a little. But when we lose elasticity in our connective tissue, there's no amount of anything that will make a difference. The speed of the loss is down to genes, and they keep telling us, too much sun: my childhood was spent in a hot climate.
So, accept that we all get wrinkly, and if it upsets you, cover it up, but try to get to the stage where you don't care: younger people need to be aware that it happens to everyone eventually.