MistyMC is a long term 100 percent vanilla SMP that has been running for around 6 months with no resets.
It supports both Java and Bedrock players on the most recent versions so friends can join together.
People hang out a lot and it has a big tight Discord community. You can start your Minecraft phase with your buddies and try to form a nation or just chill and talk.
There is also a Bluemap you can use to check out the world.
