I have been looking for a Fediverse instance that satisfies my requirements:

• Have a relatively small amount of users
• Neutral users
• Doesn't block any remote instances
• Doesn't try to get blocked
• Stable

After a bit of searching, I remembered that I did create an account on misskey.pm 7 months ago, which nailed almost everything.

The choice has been made! Of course, thanks to nauzome for hosting the instance.