I used this to find where my Reddit subs went and how to find them again on here and lemmy (and squabble and mastodon and shitjustworks......gods I feel like a rabbit on speed ,so many tabs open, so many instances...)
oh sorry as I was saying this is helpful: https://sub.rehab/?searchTerm=&visibleServices=lemmy&visibleServices=kbin&visibleServices=misc&visibleServices=matrix&officialOnly=false&newOnly=false

Plant a cactus in it and keep it on your desk, remembering better times

I think you can find a lot of what you are missing here: https://sub.rehab/?searchTerm=&visibleServices=lemmy&visibleServices=kbin&visibleServices=misc&visibleServices=matrix&officialOnly=false&newOnly=false