The only problem with not deleting all cookies with some automatic tool is it will make it easier to fingerprint you. Anything difference with your browser's behaviour is fingerprintable.

Also, check your this section from the Arkenfox wiki (made by experts on browser fingerprinting):

🟪 DON'T BOTHER: Cookie extensions

- ❗️Sanitizing in-session is a false sense of privacy. They do nothing for IP tracking. Even Tor Browser does not sanitize in-session e.g. when you request a new circuit. A new ID requires both full sanitizing and a new IP. The same applies to Firefox
- ❗️Cookie extensions can lack APIs or implementation of them to properly sanitize: e.g.
    - ⚠️ [last checked Nov 2024], Cookie Auto Delete even instructs it's users to disable Total Cookie Protection - ⚠️ DO NOT DO THIS ⚠️

        "As of Firefox 86, strict mode is not supported at this time due to missing APIs to handle the Total Cookie Protection [... followed by instructions]"

As I said, DivestOS supports microg. It signature spoofs the latest microg release, enabled with a toggle in the settings.

MicroG actually works on DivestOS. It is "unsupported", as-in the Dev doesnt want to put any significant time into development for Gapps support.

I would avoid /e/os (and iode) because they are frequently behind on Android security patches. More information here: https://divestos.org/pages/patch_history

Stop paying the CEO so much!

Firefox could by now have:

• Much better anti-fingerprinting for a generalized threat model (RFP is too specialized for anonymity)
• Fission (per-site process isolation) for Android, among other things.
• Integrated content blocking (based on uBlock but with the development power of Mozilla)
• Tab groups ffs
• Native force dark mode for web pages
• Sandboxing support using zypak fork server for Flatpak (currently Flatpak weakens Firefox isolation substantially)
• UI/UX update (hire the talent at Zen browser)

Stop paying the CEO so much!

Firefox could by now have:

• Much better anti-fingerprinting for a generalized threat model (RFP is too specialized for anonymity)
• Fission (per-site process isolation) for Android, among other things.
• Integrated content blocking (based on uBlock but with the development power of Mozilla)
• Tab groups ffs
• Native force dark mode for web pages
• Sandboxing support using zypak fork server for Flatpak (currently Flatpak weakens Firefox isolation substantially)
• UI/UX update (hire the talent at Zen browser)

If you aren't from the USA, don't try to punch a hole in the wall. If you punch drywall, avoid the stud boards. Easy way to break your hand.

If you liked LineageOS without gapps, than I highly recommend DivestOS. It is a soft-fork of LineageOS with significant security hardening and removal of proprietary binary blobs.

Avoid installing extensions as they break browser site isolation (bad for security). Extensions have a lot more access than a website does in the browser.

Massgrave (known widely for their Windows and Office activation scripts) provides download links as well, useful if you use a VPN since Microsoft blocks you from downloading.

Directory link: https://massgrave.dev/genuine-installation-media

And all tax funded tech should be open source.