Hey @JamesCiao, sometimes it might be better to just delete your instance and your disk and run it all over again. If your install script didn’t run correctly the last time it might have actually written some stuff onto your disk during some of your initial tries. Which might be causing problems for your future attempts to install stuff.
Try deleting your VM instance, and disk (I think it’s menu >> Compute Engine >> VM Instance) then delete your instance. Do the same for in menu button >> Compute Engine >> Disks to make sure the disk is deleted too.