I found a Java server that people say is the best.
It runs on Minecraft Java 1.21.5 and it is called SFOCHIA.
There are no extra details given so it looks like you just join and play.
THE BEST JAVA 1.21.5 SERVER
GG.MINEWIND.NET New Server IPLighthouse SMP Vanilla Bedrock Survival
community focused playcozy community hubno frills gameplaysimple vanilla worldsurvival world building
Lighthouse SMP is a small survival server on Bedrock. It keeps things vanilla and simple so it feels like classic Minecraft.
The community is friendly and the whole point is to play together and chill. If you want a smaller place where people actually talk this one fits.GG.MINEWIND.NET New Server IP