This is my first time making a mod and I did perfectly.
I made everything in the picture. Everything is overpowerded. The sword as 10,000 attack damage and the armour has 100 protection.
{no help}
You can make a mod with Mcreator and there are lessons that you can follow to learn how to code mods.
The lessons are on the courses tab on codakid.com.
You can make multiple mods and they will all work fine.
{Sometimes in the code it does not work properly then you have to debug}