I'm currently a high school freshman trying to find some resources for studying higher math. I've read through some Intro to Proof books, Stewart's Calculus (and other supplementary calculus materials), linear alg by W. Curtis, and diff eq by Simmons.
I read through the first two chapters and did the problems in the first chapter of Basic Real Analysis by Knapp, and I realized I probably am not ready for that level of difficulty. The propositions build off each other rapidly, the most specific examples plug in something intensely general like the real numbers for a set, and there are barely any diagrams. So, I self-studied using Trench's RA, which has been a lot more fruitful and the problems are at least natural. I've seen a lot of other questions asking for books on Intro to RA, though I really would like to have the ability to go through something like Knapp's book or even the sequel (Advanced RA) because it seems very interesting. I also have a friend who may be interested in reading it in the future.
Are there any supplementary materials that could help with this or should I be looking for something else? I am particularly confused because I don't know the target demographic for Knapp's Basic RA.
(I hope this falls under understanding concepts in the community guidelines cause idk where else to ask it)