Many repack groups do not just crack the software; they bundle pre-made "preset" XML files. These presets claim to be "Ultimate Gaming Tweaks" or "Privacy Secure" configurations. For a beginner, downloading a repack with a one-click "De-bloat" button is easier than learning what "Windows Push Notifications User Service" does.
For the brave, Windows comes with the Deployment Imaging Service and Management (DISM) tool built-in. You can: ntlite repack