steps

Download the .zip file

Download Geode-SDK https://geode-sdk.org/

Download Texture Loader https://geode-sdk.org/mods/geode.texture-loader

Open Geometry Dash

Go To File Above Daily Chests

Press/Click The File In Bottom Right Corner

Drag and Drop The .zip File Into The Folder

Hit The Refresh Button (circle with arrow)

Right side on available should say "Trollmachine" or "ZONKMACHINE2207"

Drag to applied and apply.