Step 1: Download your presets for Lightroom. Keep in mind that presets arrive in a zip file, so you will need to unzip them and extract the files.
Step 2: On a Mac, open Preferences in Lightroom. On Windows, open Edit then Preferences.
Step 3: Choose the Presets tab within the Preferences dialog box, and then:
For older versions of Lightroom, click on "Show Lightroom Presets Folder."
If you're using a more recent version of Lightroom Classic, click on the "Show All Other Lightroom Presets" box.
Step 4: For an OLD Version of Lightroom - Click on Lightroom Folder and then, Open the "Develop Presets" folder.
For a NEW Version of Lightroom - Just Click on the Settings Folder.
Step 5: Copy the unzipped folder located in your downloads and paste it into the "Develop Presets" folder.
Step 6: For the final step, restart Lightroom, and you'll discover your presets in the Develop Module, listed under the Presets section.