CoFH Core Mod for Minecraft 1.19.3, 1.19.2, 1.19.1 and 1.19, is a necessary add-on if and when you want to make use of certain features of some Minecraft mods. Therefore, certain add-ons will not be of any use if they are not installed.
As usual, CoFH Core by itself does not have any kind of utility, so it should not be installed alone, since it will require at least another mod to be functional. Basically, its function is to reduce the mod development effort, something loved by many of the creators.
This add-on will only have to be located in the “mods” folder, inside the game location, the well-known “.minecraft”. However, sometimes this folder may not be present, so it will be necessary to create it manually (with the same name).
The objective of CoFH Core is none other than to facilitate the creation of mods, and as it is logical, its installation alone will not make any sense, so it will require at least another mod to be functional.