Have any of you watched the modern algebra lectures on exademy? Are they sufficient? I tried studying it from IMS notes at first but couldn't understand anything.I have not seen the lectures that you have talked about but not understanding anything in modern algebra in your first reading is a very normal thing. I've done multiple readings and I can still only moderately understand group theory, ring theory and am yet to figure out how to score in questions from other topics.
Every person is different, just take a call on your strategy and improvise accordingly. In terms of trying to understand, you can check out mathstackexchange, it has a lot of problems and people discuss their solutions. Apart from that, I would just go to youtube and search for the concepts, it helped me. All the best!
Thanks !!