I completely understand that - especially because you're rarely handed a chemistry equation and expected to plug and chug, but rather you're essentially given a word problem and asked to problem-solve (sometimes requiring more than one equation!).
One thing that might help would be to master an equation at a time. Personally, sitting down and trying to memorize a chemistry equation without context wasn't much help to me, but when I was ready to learn the Henderson-Hasselbalch equation, I maybe did a dozen or more problems that required using this equation in different ways. So slowly, one by one, I closed the gap between what I knew and what I didn't know. You might find that there is a relatively small number of chemistry equations you'll need to master to really see an improvement in your score if you can identify frequently tested chemistry equations. I hope that makes sense?