unrelated question but i think this is the right thread to ask, i started no longer understanding math and legitimately hating it after (9éme année) because i always knew the answer intuitively (geometry, algebra  and calculus) but 80% of the time i didnt know how to express the answer syntaxically, i digress, how can i pick up where i left so that i can be able to understand probability(statistics), cryptography graph theory and group theory