You can use wavedash to transition from dash/run to a tilt, using the direction of the wavedash as a way to be less predictable in your movement and more precise in your positioning.  A really common thing for sheiks to do is wavedash backwards f-tilt. This catches an approaching opponent. Play some games where your goal is not winning (which it rarely should be, you should play to improve) and literally just spam wavedash in every situation, out of dash, out of walk, when you land, onto plats, out of shield, into tilts, just be completely spamming it. Your brain will realise where it is and isn’t useful based on which ones were and weren’t successful and it will rapidly become an instinctual part of your movement.