Hopefully standard tooling will appear in time. Patreon PoC of unprivileged VMs, https://www.xda-developers.com/nestbox-hands-on/

> On the Pixel 7, the most configuration you'll need to do is similar to Shizuku. You connect to your own phone over wireless adb, configure the maximum container size, and then choose your Linux distribution. It'll download, configure, and then execute the virtual machine.