I have already studied "Advanced Calculus Second Edition by Patrick M. Fitzpatrick" on real analysis. It is the best book on real analysis I found that can be studied by self-learning with high-school math knowledge, even better than Rudin's analysis. It is best because it is 1- rigorous but still simple, 2- comprehensive (beautifully 590 pages!), 3- VERY readable for self-learning (most important reason).
I want to start the next book on real analysis, i.e., MORE ADVANCED. But I need it to have all the three mentioned criteria. I would appreciate it if someone helps me. Thanks a lot.