I found a hosting option called Stellara Servers and it seems made for people who want a Minecraft server that runs smooth even with mods and plugins.
They talk a lot about fast hardware so you get low lag and stable TPS. It also supports modpacks plus plugins and custom jars so it sounds flexible.
Setup is instant so you can get going fast and the control panel is supposed to be simple to use. They also say support is helpful and responds fast.
There is a 60 percent off first month deal with the code REDDIT60. They also mention helping you pick a plan if you want around 10 to 20 players.
Lag Free Minecraft Hosting That Slaps
GG.MINEWIND.NET New Server IPMinecraftOffline 1.21.11 Permanent Map Server
I found a server called MinecraftOffline that runs on version 1.21.11 and it is made for people who want a world that sticks around.
The map is permanent so it is not getting wiped all the time. It also uses a custom plugin suite so it is not just plain vanilla.
It is based in Finland so it should feel good for players in Europe. The server also says it runs on reasonable hardware and that helps keep things stable.GG.MINEWIND.NET New Server IP