I know my question is opinion-based but I am desperate and do not know a better place to ask it really. I was in love with mathematics since high school and I was always very good at math and physics back then. But due to economic situations, I was forced to go to medical school (after a lot of uninteresting studies) a decision which I regret most to this day. Now I am a 6th-year medical student in Iran (1 more year to go) and I am 25 years old. 3 years ago I started to study mathematics as a hobby, but it got more serious. These are the subjects which I studied since then in chronological order (I always do the exercises):
Calculus I and II - Coursera - Jim Fowler
Calculus Made Easy - S. P. Thompson
Probabilistic Systems Analysis and Applied Probability - MIT-OCW
Mathematical Methods in Physical Sciences - M. L. Boas (first six chapters: infinite series, complex numbers, linear algebra, partial differentiation, multiple integrations, and vector calculus)
How to Prove It - D. J. Velleman
Book of Proof - R. Hammack
Introduction to Graph Theory - R. J. Trudeau
Differential Equations - edX
Differential Equations - Udacity
Linear Algebra and Multivariable Calculus - Youtube - Aviv Censor
Linear Algebra Step by Step - Kuldeep Singh
Introduction to Differential Equations - S. L. Ross
Nonlinear Dynamics and Chaos - Steven H. Strogatz
And now I am studying Lay's Analysis: An Introduction to Proof.
I also learned some machine and deep learning and how to implement neural networks from scratch in Python.
I love mathematics more than anything else. But is there a chance for me to succeed? Given the facts that I am 25 and wasted all these years? I also wanted to know is there a possibility for me to study pure math in a tuition-free university in Germany for example (from the beginning)? To expand my studies further still, I use the resources in http://hbpms.blogspot.com/. Is that OK?
Thank you for your time