One thing that I've seen mentioned less than other
#fediTips these days is that in the fediverse culture the number of followers isn't considered important, having *mutuals* is.
Some instances even hide the number of followers and people followed, and users can do so for their own account.
Even when it's visible, having a huge number of followers and following very few people is looked at as a oddity, and a sign of somebody who's probably not interested in interacting with people, and thus is not really part of the fediverse culture.
The converse is also true: users with almost no followers who follow a lot of people (unless they are really new) give a bad “bot” vibe, and people in the fediverse tend to be wary of them.
Having a reasonable number of both followers and people followed is seen as ideal.
This doesn't mean that you have to follow everybody who follows you! curating the list of people you follow is an important part of the fediverse experience, and you should only follow people whose posts are of interest to you and will make your life better. However I'd recommend giving at least a chance to everybody who follows you, looking at their profile and posts and consider whether you want to follow them.
And then, remember that unfollowing people is perfectly acceptable and requires no explanation: following somebody is not a long term commitment and consent can be given and taken away at any time.