ahhh no omg i totally get it anon!! i got into writing fics several years ago for a different kp0p fandom & genuinely i was only brave enough to publish because of my best friend art encouraging me...i def have the same fear of my writing flopping/sucking and im honestly currently going through a phase where im embarrassed to even write anything because im so scared it will suck LMAO but my best advice would be to just be to start small! maybe post a few little drabbles or threads, and then you can build your confidence up from there. finding a small community online can always help too, just bouncing ideas of friends can be so inspiring and fun! just remember that there are no "bad" ideas, even if they're cliche, and that as long as you're having fun that is literally all that matters! it's easier said than done, but don't stress too much over things being "good enough". this is a hobby for fun and as long as you enjoy what you're doing, thats all that matters! <3