@Dorczaa Renaming the Opera file fixed my problem! Thank you so much!

@imnotelliot Adding to my previous post:
I have also tried turning off Windows Defender too.

This morning, I was trying to go on OperaGX. At first, it was working fine. Then, it suddenly crashed. I haven't been able to get it to start up ever since; it opens for a half second, goes white, and closes itself.
I've done the following things:

1. Restarted my computer
2. Reinstalled OperaGX
3. Uninstalled and then reinstalled a new version of it, deleting my user data from it.
4. Ran OperaGX as administrator.
   As soon as I installed a brand-new version of it, it won't even open at all.
   My computer is up to date. I haven't had any problems up until today.
   If anybody could help me, I would highly appreciate it.