Blank screen after login since Mojave install

TL;DR - Blank screen after login since updating to Mojave. Will only boot into safe mode, but its slow with graphical issues, with several apps unusable. Please help!

Hi all,

After downloading the Mojave update from the App Store on my MacBook Pro 2018 (with touch ID button), I left it to do its thing as it said it was take approx 30 mins. When I returned 45 mins later, the MacBook screen was active (there was backlight), but the display was empty including no cursor. I restarted using the power button, which brought up my 3 user login accounts, and a new Mojave interface and background. However, when I enter the password of my account, it accepts it, a progress bar appears, then I get the same empty, blank screen I saw earlier. There is no way forward. No activity, no action, no buttons do anything at all.

I rebooted into Recovery mode to find that the Macintosh HD (APFS Encrypted) is greyed out and Not Mounted, with the OS X Base System mounted, so cannot perform any first aid.

I also tried to Reinstall OS, which required me to unlock, successfully. It then re-installed. However after about 30 mins, the screen changed to an Apple logo with progress bar (no text), reached just past 3/4 and hangs there. I left it for at least 45 mins, but had to press the power button to turn it off. Powering on and the problem loops all over again as above.

However, interestingly, I tried to boot into safe mode, and I can successfully login. But there are problems. The OS is clunky and slow with lots of graphical issues everywhere, which renders some apps unusable. Unfortunately it still won't work outside of safe mode.

Can anyone help please? I'm struggling to complete my work without the MacBook working...