how can i let my rust server show up in the community list? i saw some videos and there it says that you need to go to the rust dedicated data file and edit a kinda oxide. .... folder but last time i checked the rust dedicated data didnt had that less files soooo.......

It's not there. It's in oxide folder, file oxide.config.json

But i dont have that file
if i download umod it wil only give an managed file?!

The oxide.config.json file is created under the oxide folder when you have successfully started the server once with Oxide.