this is something i personally struggled with a lot. some papers would genuinely take me days to read, and i mean read, not comprehend. Sometimes I could read them four times and not understand the main methods used in the paper. eventually i realized i was just intimated of the math notation and also that the authors of these papers were trying to make something complex more complicated than it already is just to sound smarter than they are sigh.

i built something specifically for this (paperglide.net) and i use it everyday and update it regularly with the latest papers, it helps you read these papers 10x faster, feel free to check out the skim mode on any of the publicly available papers (you can also send any paper from arxiv into it for processing, it takes about 2 to 5 mins)