Termux from GitHub or F-Droid
AnLinux -> Dashboard -> Ubuntu

Paste the AnLinux command into Termux
Once done, run ./start-ubuntu.sh

Run these commands one after another

apt update
apt-get clean
apt-get install -y build-essential
apt-get install software-properties-common
add-apt-repository ppa:openjdk-r/ppa
apt-get update
apt-get install openjdk-8-jre
apt-get install openjdk-21-jdk

wget -O minecraft_server.jar (link to the file)
** do note that you can use a link to Paper, or Spigot, or whatever else, just replace the name and the link, for example, "wget -O paper-1.20.4-496.jar (link to paper 1.20.4)"


chmod +x minecraft_server.jar
** if you used paper or whatever else, change "minecraft_server.jar" to whatever else you used, for example, "chmod +x paper-1.20.4-496.jar"

java -Xmx(RAM AMOUNT) -Xms (RAM AMOUNT) -jar minecraft_server.jar nogui
** if you used paper or whatever else, change "minecraft_server.jar" to whatever else you used, for example, "java -Xmx(RAM AMOUNT) -Xms (RAM AMOUNT) -jar paper-1.20.4-496.jar nogui"

Let it run and show the EULA warning

apt install nano
nano eula.txt

Then run java -Xmx(RAM AMOUNT) -Xms (RAM AMOUNT) -jar minecraft_server.jar nogui again

It should be working now, do note that **this tutorial does not show port forwarding and how to show with friends, this is a completely local server**

If you want to host this server publicly, I used ngrok for it. Use the ARM64 Linux build
https://ngrok.com/download

Swipe right from the left side of the device on Termux (like -> this way from the left edge of your device) to bring up the sessions menu, start a **new** session while your server is running

wget -O ngrok.tgz (link)
tar zxvf ngrok.tgz

Then register for an account on ngrok, copy your authentication token, and run the command

./ngrok authtoken (auth token from ngrok site)

Then once it's configured

./ngrok tcp 25565

Your Minecraft Server IP will be under "forwarding". You may need to rotate your device to see the full link. for example, mine could be 8.tcp.us-cal-1.ngrok.io:12345, that's the public server IP. It will change if you close ngrok!