Java Edition users of Minecraft will need Java installed. After doing that, you’ll need to download the version of Minecraft Forge that matches your server version.

You can install mods in "Minecraft" by playing the "Java Edition" and using the third-party app Minecraft Forge.

To install these mods, you'll need to use a free add-on called Minecraft Forge. This will let you customize Minecraft: Java Edition with mods.