juvenile as this will sound: the best ptake it. tips I'd throw at ya:
1--Tabletop games (even online) with a group or game with a heavy emphasis on story. give yourself to it even if it's embarrassing. either play someone super cookie cutter generic or quirky AF (silent monk superhero? wrassler barbarian?).
2-- make a throwaway on discord or a naughty forum/chat/whatever, find the folks who are sticklers for form/details/english and RP. Either a persistent forum thing or one on one stuff either will help you see new ways a narrative can organically grow into yknoooow.... wherever you want to takeit.
again.. just like my take in stuff. take it or leave it. a blast of air freshener for how stank it is either way. 😶🌫️