That's a good solution, but college-level mathematics was specifically where I had issues learning the material myself. I remember taking an upper-level college

That's a good solution, but college-level mathematics was specifically where I had issues learning the material myself. I remember taking an upper-level college class for my cs degree that focused heavily on proof-based mathematics. I decided I wanted a tutor. Online tutoring for the highschool/lower level college classes was easy to find. But not for upper-level proof based math classes that were TA'd by grad students. I finally found one company that was willing to tutor me. They advertised tutors from ivy-league grad schools and started billing at over 100/hr. Fortunately I found a grad student to to tutor me at my university for a much more reasonable price. But I definitely noticed a difference in the type of tutoring offered. I'm much less confident self-teaching myself mathematics if it involves proofs, or material that would show up in grad school or an upper-level undergrad class.