My Zen browser policies.json file I copy into the following path on CachyOS: `/opt/zen-browser-bin/distribution/policies.json`

policies.json

{
  "policies": {
    "DisableFeedbackCommands": true,
    "DisableFirefoxStudies": true,
    "DisablePocket": true,
    "DisableTelemetry": true,
    "NoDefaultBookmarks": true,
    "DontCheckDefaultBrowser": true,
    "NetworkPrediction": false,

    "DisableFirefoxAccounts": true,
    "DisableProfileImport": true,
    "HTTPSOnlyMode": "force_enabled",
    "DisableAppUpdate": true,
    "DefaultSerialGuardSetting": 3,
    
    "EnableTrackingProtection": {
      "Value": true,
      "Locked": true,
      "Fingerprinting": true,
      "Cryptomining": true,
      "EmailTracking": true
    },
    "DNSOverHTTPS": {
      "Enabled": true
    },
    "FirefoxHome": {
      "SponsoredPocket": false,
      "Pocket": false,
      "SponsoredTopSites": false,
      "Locked": true
    },

    "FirefoxSuggest": {
      "WebSuggestions": false,
      "SponsoredSuggestions": false,
      "ImproveSuggest": false
    },

    "OfferToSaveLogins": false,
    "PasswordManagerEnabled": false,

    "Preferences": {
      "signon.rememberSignons": {
        "Value": false,
        "Status": "locked"
      },
      "browser.newtabpage.activity-stream.telemetry": {
        "Value": false,
        "Status": "locked"
      },
      "browser.newtabpage.activity-stream.feeds.telemetry": {
        "Value": false,
        "Status": "locked"
      },
      "browser.search.suggest.enabled": {
        "Value": false,
        "Status": "locked"
      },
      "browser.urlbar.suggest.searches": {
        "Value": false,
        "Status": "locked"
      },
      "toolkit.telemetry.enabled": {
        "Value": false,
        "Status": "locked"
      },
      "ui.key.menuAccessKeyFocuses": {
        "Value": false,
        "Status": "locked"
      },
      "general.autoScroll": {
        "Value": true,
        "Status": "locked"
      },
      "browser.startup.page": {
        "Value": 3
      },
      "browser.sessionstore.resume_from_crash": {
        "Value": true
      },
      "ui.systemUsesDarkTheme": {
        "Value": 0,
        "Status": "locked"
      },
      "extensions.formautofill.creditCards.enabled": {
        "Value": false,
        "Status": "locked"
      },
      "extensions.formautofill.addresses.enabled": {
          "Value": false,
          "Status": "locked"
      }
    },

    "Extensions": {
      "Uninstall": [
        "bing@search.mozilla.org",
        "ebay@search.mozilla.org"
      ]
    },
    "ExtensionSettings": {
      "uBlock0@raymondhill.net": {
        "installation_mode": "force_installed",
        "install_url": "https://addons.mozilla.org/firefox/downloads/latest/ublock-origin/latest.xpi",
        "private_browsing": true
      },
      "{446900e4-71c2-419f-a6a7-df9c091e268b}": {
        "installation_mode": "force_installed",
        "install_url": "https://addons.mozilla.org/firefox/downloads/latest/bitwarden-password-manager/latest.xpi",
        "private_browsing": true
      },
      "jid1-ZAdIEUB7XOzOJw@jetpack": {
        "installation_mode": "force_installed",
        "install_url": "https://addons.mozilla.org/firefox/downloads/latest/duckduckgo-for-firefox/latest.xpi",
        "private_browsing": true
      },
      "sponsorBlocker@ajay.app": {
        "installation_mode": "force_installed",
        "install_url": "https://addons.mozilla.org/firefox/downloads/latest/sponsorblock/latest.xpi",
        "private_browsing": true
      },
      "videospeed@videospeed": {
        "installation_mode": "normal_installed",
        "install_url": "https://addons.mozilla.org/firefox/downloads/latest/videospeed/latest.xpi",
        "private_browsing": true
      }
    },
    "3rdparty": {
      "Extensions": {
        "uBlock0@raymondhill.net": {
          "selectedFilterLists": [
            "adguard-annoyance",
            "adguard-generic",
            "adguard-social",
            "adguard-spyware-url",
            "block-lan",
            "curben-phishing",
            "easylist",
            "easyprivacy",
            "ublock-abuse",
            "ublock-annoyances",
            "ublock-badware",
            "ublock-filters",
            "ublock-privacy",
            "ublock-unbreak",
            "urlhaus-1",
            "user-filters"
          ]
        }
      }
    },
    "UserMessaging": {
      "FeatureRecommendations": false,
      "ExtensionRecommendations": false,
      "WhatsNew": false,
      "UrlbarInterventions": false,
      "SkipOnboarding": true,
      "FirefoxLabs": false,
      "MoreFromMozilla": false,
      "Locked": true
    }
  }
}