Minecraft SMP Server?

I'm looking for a new Minecraft SMP server. Stop at 1.16, fairly new and with as few players as possible.

No big plugins, no other modes, really just Vanilla Minecraft with 5-20 other players.

Maybe one of you even runs such a server

All these search engines show me the strangest servers. You can probably buy up the placement there. : /

Would be very grateful if you could help me a little.

I do not know anyone. But if you can find one, could you tell me what it's called? >.