It does suck, that even within the apps or sites themselves, the search only gives communities.
Like, not being able to search for specific issues, people, or any other topic already posted even within your own instance is my biggest issue with Lemmy not being a sufficient replacement.
Like Reddit was the best place on the internet to go when was stuck with a Linux issue for instance. And rarely even having to post. Just searching the issue would generally get you fixed. Then we could start copying all the invaluable information over here from our communities efforts, and could then be truly free of Reddit once and for all!