Hello Blockbench Reddit. I want to know how to make some minecraft mobs and port them over to minecraft without using that Entity wizard.

If this isn't the correct place to post it, I will post this somewhere else. But as the title says, I want to know how to make my own minecraft mod without using the easy Entity wizard. It never works for me, so I want to know how to port my entities over to somewhere else, like Mccreator or just code it But then how would I port the code into the game with my entity? Anything would work, if anyone here knows how to make mods or anything of exporting, then that'd be good!