This whole Zoom revelation reminds me of the Cambridge Analytica scandal. This has been going on for a long time now, and it wasn't until one specific company did it that everyone is now concerned.
Mine shows nothing: "You have no available activity to show at this time."
I have been running Facebook in the special Firefox container pretty much since it was available. I took off the WhatsApp and Instagram apps from my phone months ago. For me, the number of ads (on Instagram) and integration into Facebook made them expendable.
I don't know if Facebook really has no information or they do but are not showing it to me.
I'd like to do the same with Google but the Google container wants to force all interactions with Google into one container. I've got dedicated containers for different Gmail identities - it was very handy to have a Gmail identity while I was president of the kids' soccer club and then turn the account over to someone else.
If you want to be creeped out, go to https://www.facebook.com/off_facebook_activity/ and find out how many apps have been quietly reporting all your usage activity to Facebook.
I have 100's of websites which managed to identify my Facebook account despite me logging into Facebook only in Incognito for the past 2 years.