Fixing ghost touch - how to upgrade to newer android version

Your partial version string seems to find a match with a stable build listed here https://images.ecloud.global/stable/star2lte/. Perhaps you could confirm if you need more support.

If stable you might have expected an OTA Upgrade to Android R,

but it hasn't happened for you

You would need a good backup; you could consider doing the upgrade as if a new install as https://doc.e.foundation/devices/star2lte/install. Moving from Q → R you would need to Format data.

Flashing the new ROM could be done by adb sideload, As for recovery, this can be done equally with TWRP or the Recovery-e.

If you don’t want to use adb sideload from your PC you can investigate the ability of your Recovery to install from a location like (the root of) SD card or external USB storage device and copy the new ROM to such location and use Install from Recovery.

Another option would be to change from stable to dev https://images.ecloud.global/dev/star2lte/ where Android 13 (T) is available.

I am not sure I follow but to make an fresh install you would first Enable USB Debugging.