Add more mods

[figh]

I wanted to ask you how do i put more mods without redoing a world of Minecraft? for example I want to put a mod that adds more Minerals but the world has already been done

[figh]

1 hour ago, diesieben07 said:

The keyword to search for here is "retrogen", which will generate ores in an already existing world.

A quick google search revealed this: https://www.curseforge.com/minecraft/mc-mods/easy-retrogen.

I dont know how to use that

[figh]

13 hours ago, diesieben07 said:

Seems the mod author doesn't provide good instructions...

I found this reddit comment:

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1 I have to write it in the inecraft chat?

2 does it only work with minerals?