This is a place to ask your lemme related questions. Especially if you are a new user
You don't need to switch instances to explore blahaj - you can simply use its communities from your lemmy.world account.
That said, to switch instances you need to create a new account in https://lemmy.blahaj.zone/. I'm not sure how it's done in a phone application, but in the desktop you'd follow that link, then click "Sign Up", then input username/email/password, then answer a simple question. Then wait a bit (so the admins approve your new account) and log in.
Great, I was able to be approved! Now how do I link my blahaj account with my world account?
You don't "link" them.
You can go to your world account, export your profile, then import it in blahaj though.
Great! Just imported my settings. Now how do i import my posts and comments to lemmy.blahaj.zone
You can't. That would be like trying to import your reddit comments and posts to Facebook.
Each lemmy instance, like .world or blahaj, is on its own server. There's software underneath that sends things back and forth between lemmy instances, but they're not integrated at the scale where you can just copy everything like that.
Tbh, I'm not aware of any social media that can do that.
You can copy anything you've commented or posted and save it on your own device if it's text based. You can cross post any previous posts, or repost them depending on how tolerant a given community is about reposts.
I don't think it works that way. Think of it like an email. Using some email app, you might be able to import your settings from Yahoo to Gmail but you wouldn't be able to import your sent and received emails to retroactively be sent from and to the Gmail.
Why would you even want to do that if you could?
So I can keep everything in one place. But I suppose that makes sense. But proton allows forwarding receiving emails from gmail
I guess you could manually "forward" everything by just posting it again, but I don't think there's any facility to do it automatically, and I wouldn't really see the purpose of it either.