Look, you are a sysadmin for 30+ years. 30 YEARS. That's more years than my age. Yet, when I ask you to boot with "nomodeset", you don't know what to do and instead you just trying all the "available modes" ??? What are you even do with those 30+ years man ???
Now, the guy above is correct, run the VM with QEMU + virgl because it gives you hardware acceleration instead of just staying on Virtualbox and refuse to change. If you want a build with updated Android and bug fixed (even the rectangle cursor that you reported) then there's Bliss OS. But if you just want to run Android on your Linux desktop and too lazy to run a VM (and you are not using an Nvidia GPU) then just use WayDroid. Don't come here, ask for help, and when people provide help, you reinterpret it with your own words or don't even try to do what we recommend. That is just disrespectful.