i don't think i ever felt the need to suck up to people but i definitely took some time before getting over feeling of jealousy
my "advice" is probably gonna sound dumb or hard to follow so I'll put that out there now.
BUT the first thing i did was force myself to just not care so much. Ill admire art and content other people make all the time and like im sure plenty of folks have or do is get all "man i wish i drew like that". for the most part i think thats okay cause its natural. we all do it. the issue is when the thing you like isnt just something you like but its put on a pedestal as being better than what you make. its just wrong, at least objectively imo.
so apart from not that i also had to br happy with my own content and what i was making. which can be tough sure but i break it down like this. whatever your working on, finished or not, find ONE thing you like about it and either say it aloud or like reflect on it. even if you think it might not be great still find that one thing even if its like "the sketch was good/ i did okay on the colors / the linearts pretty dang neat" just something positive even if it seems small.
also BREAKS SAVE LIVES! like its super easy to fall into scrolling through sm looking at other people's stuff and letting yourself feel like junk about your own content (been there done it a hundred times) stepping away, taking a breather and just saying "yknow what i gotta walk away" is totally fine and good for you. even though i dont have like scheduled social media blackouts where i dont go online, i still when im working will not look at other stuff and try to focus on my own stuff and what i feel good about related to it.
another one is looking at your own growth. sone might think its dumb or whatever or they just find their old art "cringy" but i love looking at old junk from 2, 4, 5 years ago and then whatever ive got now and be like "hey i got better at this" or "wow look at how this changed about my style" simple stuff like that i think is good
again sorry this is a mess, my two braincells try their best, but i hope you can work through things