Create Psychological pleasure UIUX for an app

Our app is a social media app, check here : https://play.google.com/store/apps/details?id=com.travpart.english&hl=en&gl=US

We need you to identify or create a feature which will creates FOMO/Dopamine in this format :
https://docs.google.com/spreadsheets/d/1L3FNkKLO2ioHPcfD7M3fqmUKLs0Zvn7FrNABuLcSOu0/edit?usp=sharing

Bid your price : $2/identified feature