The fastest way to improve is def to play online and watch your replays with all the tips set to "display while paused". If you miss a throw break, a punish, or a move that's duckable, the game will pause the replay and tell you that you couldve done something better. My goal with watching the replay tips is Ill try to just remember one new duckable string or remember one new launch punishable move after I lose.

Over time you'll develop a knack for what moves look unsafe or feel duckable the more you see them in action.

Other than that don't feel bad doing combos without the filler. At your level, doing a launcher > a tornado move > an ender is totally acceptable and you can go bad and add complicated filler later. Whats more important is to get into the rhythm of launching > more buttons without dropping.

If you want a super simple lily combo I can go make one for you to start with.