Personal experience?
Dunno how your hips / lats function but you can strengthen the core and still not do much good if your hips don’t move and your lats aren’t stabilising your shoulders
Depending on your level of fitness you might want something decent but not the usual.
YouTube Evan Osar for some core corrective exercise first and look to his principle of hip centration and isolation. Mostly based on breathing with the diaphragm and how that allows you to start firing different muscles. He’s also got some good stuff on core strength without sit ups once you get past the basics
Dunno if it’ll work for you but certainly opened my eyes to the standard stuff you see
Good luck