There's a lot of credibility placed on the use of topical applications by many people. I could look for something you can try at an affordable cost, and my preference would be for organic and non-invasive. Just Nourish Me is one that I've used for a while now and I'm very happy with it.
Also, theres a lot of positives that come from looking after your inner health and getting enough rest. It's not just about what you put on your skin.
By rest I mean more than just sleep. Meditation and mindfulness are great for reducing stress, which is one of the biggest culprits in speeding up how quickly we look older.
Consuming collagen from a live source is one of the best ways to get collagen into your system. But this is not all going to get to your skin. Some will, but the majority of it will be allocated to other parts of the body to sustain life as the primary objective.