WHAT IS OPTIFINE:

Optifine is a Minecraft optimization mod. It allow additional items to my resources packs, also it allows Minecraft to run
faster and look better with full support for HD textures and many configuration options.

HOW TO INSTALL OPTIFINE:

1) In this case we are going to download the last version of Optifine 1.14.4 for Minecraft 1.14.4, the installation is the same for any version.
Start by downloading the appropriate version of optifine from this link:

https://optifine.net/downloads

Wait 6 seconds and a skip button will appear, start download:

2) Click on the installer you just downloaded, which will automatically install Optifine for Minecraft:

3) Open up your MC laucher and select the Optifine profile and start game. AND DONE!