How to downgrade to Big Sur?

1 - create a bootable installer according to this Apple document: How to create a bootable installer for macOS - Apple Support

2 - boot the bootable installer.

3 - erase the drive.

4 - install Big Sur

5 - select Migration Assistant when offered and restore your users data from your Time Machine backup or clone of your current boot drive.

Have you tried this to see if you can jump start the USB ports: How to reset the SMC of your Mac - Apple Support

Does anybody else have a solution that would actually work?

What I posted is the only way to "downgrade" to a previous OS.

Well, except for just erasing the drive and reinstalling Big Sur without restoring your data, or manually restoring your data from a backup you make now.

These instructions are simple into the point. The only thing that was uncertain was that nothing ever prompted me to erase the drive. When I tried to install Big Sur without erasing the drive it said the disc could not be downgraded. Once I erased the Macintosh HD (i.e. Monterey) then Big Sur installed perfectly.

https://mackeeper.com/blog/downgrade-macos-monterey-to-big-sur/

ALso:

How to downgrade to Big Sur, form Montere… - Apple Community

Erase the drive and restore from the Backup you made prior to installing Monterey.

I cant backup my files, because none of my USB ports are working.

You should get those fixed.

How does it feel to be the least helpful person in the world?

I'm good with it.