Windows 11 is known for bloat, including pre-installed apps, tracking, and adware. To safely clean it up, start by manually uninstalling obvious junk like games and third-party security tools via Settings > Apps. Next, use a granular debloating tool like Chris Titus Tech's Win Util to disable telemetry and ads without breaking the OS.

Avoid aggressive one-click tools that may remove essential components. Always review settings afterward to ensure everything works as intended.