I took one for the team and created account on another instance only to help with the load on lemmy.world. So you are welcome everyone, enjoy those extra nanoseconds you gained thanks to my absence.
Also, please don't call me a hero, I am just an ordinary man that wants to make lemmy.world a better place...
I wanted to do the same, but when I created account on another instance, I was then unable to find the same communities as on lemmy.world. What am I doing wrong?
This might not return a result instantly - wait a few second, then search again and it should show up. From there others can find the community using a normal search, and once you (or someone else) subscribes to it, updates will be pushed to your new instance and it appears in ALL.
Keep in mind that this doesn‘t fetch older posts - you might not see any content in that specific community at first. It will however fill with new posts and comments from that point foward.
I opened two instances. One is lemmy.world and the other was something else. Had them besides each other to simply copy the subscribed list, through the lemmy ui on Safari. When I searched on lemmy.world I could see all the communities even on different instances. But using the same search settings else where yields incomplete or no results at all.
You can search by keyword in the instance community list, but that's only going to turn up communities that the instance you're searching from already knows about. With .world being so big, we've already done most of the hard work telling it about places, and now it knows about most of them so search results turn up a lot of stuff. On a smaller instance, it's more likely that you'll be the first to try and access a particular community elsewhere.
So first, congrats, you're a pioneer for your new instance!
What you need to do is search with the !community@instance syntax on the new instance, rather than just keyword search. Note the ! at the beginning of the search term. So for example to find this community we're in right now, you'd search for !general@lemmy.world
You might need to give the search results a few seconds to update, normally it'll say no results but then auto-update as it forces an index of the new community. The cool thing about this is once one person from an instance goes through this process, everyone in future can simply search by keyword and it'll show up as expected. So you're really doing your new instance a solid.
In your situation you're just trying to duplicate your sub list so you already have all of the addresses, but I can also recommend lemmyverse.net/communities for finding ones all over the place (including probably plenty that even lemmy.world doesn't know about yet).