You need to follow some PieFed or Lemmy communities and you'll see their content. But not in a way that works very well. I really like the idea behind Friendica a lot, but it's also clear that its developers have lost the track of their own code and do not completely understand what the program really does anymore. The idea is that there's something like PieFed that understands also several other protocols than just ActivityPub, so you can use one thing to follow almost all of your social media. Which is an awesome idea! But, it doesn't really work in practical terms.
It looks like there is no well-thought architecture behind its programming code, and instead they just add features atop other features without thinking about consistency or clarity of the programming code.
Typically when the UI is as convoluted to use that of Friendica is, there are also a lot of security problems in the program. I assume that it is possible to breach any Friendica account using some bug that has made its way into the code.
You're here. For me this has been a good replacement for whatever I was earlier using Facebook for.
What is there on Facebook that PieFed or Lemmy don't cover?