Any advice from animators when it comes to custom animations from scratch

Thank you! I don’t really have a steamlined process for the animations, but I guess I’m just going from pose to pose, seeing how the sequencer animates it, then making adjustments to fix things like bones pathing in strange ways. I try to start out by giving myself a lot of space to work with, like frame 1 is standing, frame 15 will be the anticipation, frame 45 will be the main pose, frame 60 will be the wind down, and finally frame 75 will be the original starting pose or something like that. That way I can just reduce the time between the keys until they feel right. idk if that’s actually an efficient way of doing things though. Then after that, adding polish by increasing or decreasing how exaggerated the poses are.

What do you mean “to adjust a previous stage of an animation that has a key for that moment already existing.”
If I’m understanding correctly, then using key snapping may help, but I’m not sure.

I don’t exactly know just yet, I keep going between something like a hack n slash or stylish fighting game like dmc or bayonetta, or an action rpg like kindgom hearts. I wanted to work on animations so I had some basic moves to work with when making blueprints buuuut I ran into some obstacles. Instead of not making progress there, I’m taking a break to look into creating environments with pcg stuff.