I am new to Linux and I am trying to set up Minecraft on a raspberry pi 4 using raspberian full. I think that I set up the server correctly but I am unable to connect to the locally or remotely. I can see Java listing on port 25565
You can always open terminal and type "ifconfig". Once you entered that, look at "wlan0", and then find "inet" under "flags". Your local IP address should be shown after "inet: ".
Additionally, I have a video on how to connect locally and remotely and how to set up a server (Pi 4).