Perhaps you may like Qubes OS.

Suggesting Qubes OS as the GNU/Linux equivalent of Android is admitting defeat. Android sandboxes multiple apps running on the same system/kernel. Qubes OS sandboxes multiple apps running on multiple different systems (VMs). Qubes, laudable as it may be, is not a parallel to Android.

Qubes is a much more secure alternative to Android without its main downside, which is that Google owns it and steers its development toward enshittification and control [0]. The latter even affects security directly [1].

Android's sandboxes are weaker and AFAIK rely on closed, non-auditable hardware (which is owned by Google in, e.g., GrapheneOS). Qubes protects you more reliably and doesn't require to abandon root privileges or a possibility to take screenshots.

Also, you don't have to run every app in a dedicated VM on Qubes: Instead you group them into security domains, which allowed me to organize my digital life like never before [3].

In addition, Qubes can protect you from supply-chain attacks by isolating VMs from the network and using different OSes side by side. I dream of using Qubes on mobile.

[0] https://news.ycombinator.com/item?id=45017028

[1] https://news.ycombinator.com/item?id=45017028

[2] https://doc.qubes-os.org/en/latest/user/how-to-guides/how-to...