Pic 1 and 2 are the same belly. I know we’re all aware of this by now, but I’ll say it again - Instagram is a highlight reel.
Stop comparing yourself to other people - YOU CAN’T look like them. Tough shit; it’s not possible. And that’s ok. They are a different human. Focus more on being the best version of you. You’ll be way more proud of yourself for being the best you than you will daydreaming about looking like someone else.
Celebrate others, but don’t let that take away from how you feel about yourself. .