I found a free Minecraft hosting service made for small servers and friend groups. It is also good for testing plugins or just messing around without paying.
The specs they list are 3GB RAM with 2GB RAM and 1GB swap. It also has 5GB storage and 1 vCore CPU. They say it is 24 7 uptime.
It is not top tier but it should be enough to actually play with friends. Feedback is welcome and right now they are only focused on free Minecraft hosting.
FREE 24/7 Minecraft Hosting For Friends
GG.MINEWIND.NET New Server IPRainbow Unity SMP Rank Up Survival
Rainbow Unity is an SMP that is updated to 1.21.11 and it is built for people who want a place to settle in.
You can claim land so your stuff stays yours and you can build up an empire over time. There is also a rankup system with perks so you can keep leveling up while you play.
I also saw crates for powerful rewards plus daily rewards to keep you coming back. It has ranks quests custom items crates and land claim so there is always something to do.GG.MINEWIND.NET New Server IP