How can someone use Wappler to create a social media app where each user sees posts that are relevant or interesting to them?
If you're asking about Social media integration then the Ayreshare API rather than trying to re-invent a very difficult wheel. Metrics, post control, timed posts, all that stuff but without the hassle of creating the middleware and authentication mechanisms required (which is hard work and the path we selected to go initially).
If you're asking about building your own app to do this then simply capture their interests at signup initially. Then you can trace their traffic across your application to build an understanding. Then use this data as the basis for a query to suggest content to them. Remember GDPR, privacy, and inform the Users you do this in your T&Cs of course...