Almost everyone has an ex, and they usually are not your favorite person, which is why y’all broke up in the first place. Many times you feel compelled to see how your ex is doing or check in with them from time to time. When you throw away your trash you don’t go back later to see how it is doing, so why are you checking on your ex after Y’all have already split? You got that toxic person out of your life, so why are you wasting more of your time worrying about him/her?
There was a reason for the breakup, stop trying to see if they are doing better then you because they WILL as long as you still care. Once you stop caring about how they are doing is when you can start improving and doing well on your own. You do not need him or her to grow and be who you need to be.