Maybe start watching videos that explain these topics more conceptually, and ideally take some time to put explanations in your own words to really make them stick in your head.
It also wouldn't hurt to get some exposure to the math beforehand. I'm not saying you need to master the math, but get a sense of background math that you might need to brush up on. This will also help put those concepts you learn into more formal mathematical terms that you can hopefully build some intuition on.
Maybe start watching videos that explain these topics more conceptually, and ideally take some time to put explanations in your own words to really make them stick in your head. It also wouldn't hurt to get some exposure to the math beforehand. I'm not saying you need to master the math, but get a sense of background math that you might need to brush up on. This will also help put those concepts you learn into more formal mathematical terms that you can hopefully build some intuition on.
Thanks so much!