To study endgames do puzzles and learn endgame principles
How do you study endgame?
If you want to get the most out of study time then get a coach and ask the coach to compile all the relevant material for you into a study plan. My students don’t waste time searching for this stuff because I find it all for them which maximises their study time but not everyone can afford that luxury.
For practical endgame advice check out Ben Finegolds endgame lectures on YouTube I find they are very helpful for anyone 1000-2100 chesscom as he’s lecturing a mixed ability class so there’s different levels of depth you can watch at and still take away new lessons. I have rewatched these a few times and they helped me get to 2080 rapid.
I've already studied some basic endgame like the lucena, philidor, two bishop checkmate, etc. But I think there is so much more but I dont know how and what to study. Currently, I am only solving endgame puzzles on lichess, but I am open to any advices.