Hm, you might have to take specific steps to get subscribed to stuff you want to see. Personally I find browsing 'ALL' to be a pretty unproductive experience... what I might do instead is just navigate to a couple of the likely-seeming instances (roughly in order of "big -> good": lemmy.world, lemmy.ml, sh.itjust.works, kbin.social, sopuli.xyz, lemmy.blahaj.zone, mander.xyz) (also beehaw), pop up their big community lists, and do some copy-pasting into your own instance's search bar so you can subscribe to a bunch of the stuff from everywhere that you want to see. I've done that one time from a smaller instance and it seemed like worked out pretty well for me (in terms of the time investment being worth it for setting up a feed that I wanted to see.)