I found Silver Cove MC and it feels like an SMP that actually tries to stay alive. The main idea is that the server listens to players a lot and adds new stuff based on what the community suggests so it does not get stale fast.
It is a semi vanilla survival server on Paper for 1.21.5 and you can join on any higher version too. They use plugins but it is mostly quality of life so it still feels like normal Minecraft.
They also say it will never be pay to win. Ranks are earned for free by putting in work and you can support through a store only if you want.
To fight the two week phase they do custom events often and keep updates coming from player feedback. The community is meant to be welcoming to everyone.
Silver Cove SMP No Pay To Win

EchelonMC Simple Survival SMP 1.21.1

Oasis Survival Realm Fun

🌴 Oasis Survival 🌴
Server Info:
- Status: Not open yet, but will be soon!
- Join us on Discord: Oasis Discord
- Website: OasisSurvival.com
- Bedrock Port: 25565
- Version: 1.21.8 Survival Server
Why Join?
- Chill and friendly survival for all
- Landclaims to keep your builds safe
- No world resets ever*
- No pay to win stuff
- Java + Bedrock server
- Turn off phantoms if you want!
- Open to ideas via Discord
Community Focused:
This server is all about a chill survival vibe for everyone.
Note:
*Unused end/nether chunks may reset in the future.
More info on Discord!
OasisSurvival.com
City Survival: Where You’ll Wish Creepers Were the Only Danger

Server Overview:
Server Features Destroyed city setting Map Size 2.5k distance Claims Protection Minimal, inactivity for 3 days will remove claims Helpers Needed Looking for helpers and suggestions Server Restarts Frequent restarts as things are ironed out FAQ
Question Answer How big is the map? The map is 2.5k distance, for more dynamic city gameplay Is there claims protection? Minimal claims protection, inactivity for 3 days will remove claims Are helpers needed? Yes, the server is looking for helpers and suggestions How often are server restarts? There may be frequent restarts as things are ironed out
