Ez mastered azure flames combo *needs ragdolled wasted*:

3 m1s -> 1 (fully charged) -> wait before front dashing -> 3 m1s -> downslam -> 2 (both parts) -> side dash -> 3m1 +downslam (optional) -> 3

Tips:

Violet form unlike mastery stain has a cost the longer your in it, so try to make at least 40-30% of time in 1v1's using that form to minimize damage. Hell assault is useful for people who wont stop holding f as it travels relatively far and goes through block. Phantom shot is just extra damage, and cinder bind should really only be used when Hell assault is available and they have no evasive. If you see no way to get them in a combo, do not shift to violet, same goes for if they have evasive. I think that's all I have to share, I am also kinda new to mastered dabi, so i probably missed some stuff, but I hope this helps regardless.

@Gammahedghog thanks for the tips, but could you be more specific, like how to use the moves properly, in what situation should i use each mode, what are techs and weakness of this character, etc.