I found a simple Aternos Minecraft server that is open for people who want to join.
It sounds like a small setup where you add the owner on Discord to get in.
If you just want a place to hop on and play with others this is basically that.
JOIN THIS ATERNOS SERVER NOW
GG.MINEWIND.NET New Server IPOnion SMP 1.21.11 Crossplay Survival
I found Onion SMP and it is a survival server on 1.21.11 with crossplay so more people can join
It has claims so your builds can be protected and it has keep inventory so dying is not super painful
You can use rtp to get around and there is combat log protection so fights feel more fair
It also has teams so you can group up and play together
GG.MINEWIND.NET New Server IP