The AppData folder is hidden by default on Windows. You can either enable hidden files in file explorer or paste the full prism launcher directory into the bar
Essentials is a plugin. Are you referring to "ForgeEssentials"? Or Bssentials?
The addons marketplace is only for Fabric, not Forge
The marketplace has FabricAPI, which would imply you're not running forge, and ForgeEssentials is a Forge mod.
