I’ve fixed a few glasses on machines I got cheap. There’s no silver bullet that I know of. It’s painful trial and error until you find something you’re happy with.
The enemy of good is better here. I remember wiping off attempts that looked pretty good, then proceeded to make it look worse and never could duplicate the pretty good attempt.
I just fix the opaque parts and bandaid the translucent parts as well as I can... and then start hunting for a replacement glass.