I opened my project and saw that some of my nodes are missing and some of the scenes became corrupted. I tried to open the corrupted scenes using a text editor but they were completely empty. How do i fix this?

    Github or similar platforms are always a good idea if you are planning on releasing the project or just want to backup stuff you want to reuse in the future.

      I use git for some projects, and github for some of those.

      But I backup everything I don't want to lose on an external USB drive, with an app (BackInTime) that performs hourly backups.

        i had this happen after moving around some files some time ago. in my case i was pretty sure that I was indeed the issue. I read online to remove the .godot file from the project folder and then reimport the whole project.
        The issue was resolved in my case if i remember, maybe it was just moving the correct files back.... sorry i cant remember. Luckily for me it was on a copy of my project i was testing around ideas on, but since that happened i have made a backup of my file every time i reach a good development point... bc that is a terrible feeling to have, and i genuinely feel bad for you. I hope something works out!