So it seems that facebook has a 'rebranding' that puts virtual-reality up front and good ol' fb behind.
If you are not interested in VR or meta,one should check the browser so that these things do not access the browser.
Since I'm Firefox oriented, I'll start with it (should also work with clones). Given fb's history, this might be a good idea.
In about config accept the risk and search for these two terms
oculus
vr
False ALL options.