Instagram isn’t a realistic representation of real life, people post only the good things they do. I know it’s easier said than done, but try not to think about how many likes/comments a post gets.
What me and my friends do when social media is making us feel bad is we come off it for a while, we would put the apps like Instagram and FB on mute/turn notifications off and stop using them and focused on ourselves irl.
I hope this helps