Because I am Brazilian I have one account in a Brazilian instance. So when I am on the mood to read and participate on talks about Brasilian politics and news, I use that account.
But I live in Germany, so I also have an other account in a German instance when I want only to focus on German conversation, news, culture, memes, etc.
And a third account I have in a specific political orientation instance that is in English. So that account is when I want only talk about my political orientation with like-minded people.
But I am not religious about how I use my accounts. At the moment I am using the account that I created in the Brasilian instance.
Lemmy doesn’t as many accounts and people participating as in Reddit. But the more you participate the more you motivate people to do as well, because it can create the start of conversation.
Also…
Choose “active” or “hot”.
The point of creating more than one account, for me, is to have each account being about the subject of different instances. It feels more organised and sometimes I am on the mood to only read from one instance or other so it is convenient to have each account in different instances.