Low brightness and unresponsive keys on my MacBook Air after waking from sleep

“Low brightness and unresponsive keys on my MacBook Air after waking from sleep

2024 M3 macbook air - After I put it to ‘sleep’ mode, when I turn it back on, the brightness is super low, and the F1 and F2 keys do not work to adjust the brightness. Going to settings and everything is greyed out.[…]“

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Troubleshooting a M3 Mac with Grey-Out GUI:

• Boot into Safe Mode:

When you boot into Safe Mode, items load by default, with certain settings and caches set aside. Go here: Start up your Mac in safe mode - Apple Support

• Create a New Administrator:

See if creating and logging in as a new administrator does the trick. There may be something misconfigured in your current user - something that is getting in the way. Go to: System Preferences > Users & Groups > Unlock > Click: "+" > Create the new administrator

• Reinstall the macOS, Backing Up First:

Nothing would be deleted. It's just that items that have become corrupted or deleted, would be replaced or reinstalled back to where they should be, respectively. Go Here: How to reinstall macOS from macOS Recovery - Apple Support. Important: Be certain to create a backup of your Mac prior to all of this. That way, you can have something to restore from the Mac from, should anything go wrong with the reinstall.

“Appreciate the reply, but is there a way to avoid completely reinstalling the entire macOS?”

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About Reinstalling the macOS:

Your macOS is not going to be deleted; it’s going to be fixed of bugs and discontinuations.

I have the same issue with my MacBookAir M3 with Sonoma 14.7.4 and the problem seems to be prevalent among many users. Being an "un-geek" person of considerable age, before I attempt some of the fixes suggested by others, I'd like to ask if anyone has had any success resolving this.