[TUTORIAL] How to use Optifine in MCreator test area [Forge]

First of all, download the Optifine version you want from the Optifine website.

Then download this file related to Optifine mod launcher.

Then open your workspace folder

Then put both the jar files you downloaded inside the mods folder (if there is no mods folder, create one with the same name yourself)

NOTE: When you enter the game with these two mods, Optifine is not in the list of mods, but Optifine is installed and all its features are available.