>>16727723 (OP)99% of EM problems come down to knowing what to integrate and how to integrate them.
It comes with experience, not simply half-assed knowledge you memorize. You lack both experience and aptitude. So you need to do problems, not shitpost on 4chan.
- Griffiths solution manual is on the usual pirate sites.
- Jackson has a bunch of solutions on the internet.
- Likharev’s problems and solutions books are free on his website.
- there are a bunch of other problem books with solutions
Do them, compare your work with the solution. Figure out why you couldn’t get the right answer. Make notes. Rinse and repeat.
That’s it. EM is the most grindable physics subject.
Stop deifying Irodov and other books like that. This is something you can train.