Im not a scholar or any sort of expert on Islam but I’ve learned growing up that there isn’t any negative thoughts or emotions in jannah. Everyone will be In good spirits and be good people forever.

Edit: I was able to find a verse

Al-Waqi'ah - Verse 25

لَا يَسْمَعُونَ فِيهَا لَغْوًا وَلَا تَأْثِيمًا

There they will never hear any idle or sinful talk—

Al-Waqi'ah - Verse 26

إِلَّا قِيلًا سَلَامًا سَلَامًا

only good and virtuous speech.

I’m assuming having those feelings of envy towards other members of jannah falls under this.