There are four game difficulty options for Minecraft, them being:
Peaceful, No hostile mobs, no food degeneration.
Easy, Hostile mobs will spawn but won't give debuffs, food will degenerate.
Normal, Hostile mobs can give debuffs, hunger takes you down to half a heart.
Hard, Hostile mobs deal more damage and spawn more often, hunger can kill you.
How do I change my difficulty?
The easiest way to change difficulty, is by navigating to your console, and once the server is online, using the difficulty hard command ('hard' can be changed for any of the above options).
If this doesn't work, you can try following these steps:
Log into our server control panel.
Click 'Manage' to open your server.
Click Management, then click File Management.
Find and open the server.properties file.
Find difficulty and set it to the difficulty number from 0-3, as explained at the beginning of the guide.
Press the 'Save File' button.
Restart your server, see how to do that here, if you don't know how.
Updated on: 27 / 01 / 2022