I mean I think it's natural to see people progressing faster than you and get discouraged. You just need to be able to find your own enjoyment despite that. For the super young Chinese prodigies, keep in mind that yes they do have natural talent, but they are also growing up in a time with better hardware and resources, plus cubing schools that teach good algs, finger tricks, and other fundamentals from the start.
You should look at how you are practicing and learning things to try to find what works well for you and what isn't as well as assessing weaknesses. When learning algs, I suggesting thinking about how pieces are moving like in the picture below instead of just memorizing moves/triggers or relying on muscle memory. In the Sune diagram below, you can just visualize how you are taking the pair out, moving it over, then reinserting it, which gives the alg an intuitiveness that might be easier to learn than just a set of moves.