Teaching myself SAT level mathematics

Hello fellow students!
After a gap year, and applying to schools who are test optional (and getting accepted to said schools), I find myself now with a desire to attempt the SAT (ah, the proverbial one that got away). However, I’m nearly illiterate when it comes to most of the math topics it beholds. I’m registering for the Nov 3 test date- which gives me roughly 5 months to study and revisit those forlorn topics. My question is, where do I start? I’ve thought of acquiring a tutor, and I probably will to polish/improve my comprehension whence the SAT date is nearer. Hence, intermediately I would like to take my own independent steps to teaching/reintroducing myself to the SAT Math subjects. I’m just not sure where or what to start with, Algebra and then work my up to advanced math? I’d imagine? and if there are any other autodidacts out there that have attempted/accomplished something of this nature, I’d love to hear about it and any tips or advice you’ve grown to learn on the journey!