I have some experience with servers. I'm looking to step up my game and have 15 to 30 players on.

I'm using Docker to run the server, and playit.gg for the tunnel (It was simple and it worked). I heard complaints from my players that there was a lot of delay and problems with connecting so I wanted to switch to something more reliable and fast. I think shelling out 30$ a year for playit isn't worth it. I heard that Nginx is good but I have 0 experience with it.

Does anyone who is experienced in hosting larger servers know something that works well?