I might not have explained what I meant by that - does your keyboard look like this, where some keys have additional functions mapped to them that can be accessed by holding the Fn key (usually next to Ctrl in the bottom-left corner) and pressing that key?
(image taken from a Brave Image Search for “acer aspire keyboard layout”)
If so, it’s theoretically possible that something in software is causing your PC to act like Fn is always being held down, but something physical with the keyboard is a very likely cause of this kind of issue, so it’s worth making sure that the Fn key / any of the other keys aren’t stuck or obstructed in any way.
If it’s not, it may be worth looking at some of the responses to this thread to see different options for key combinations that may help reset the Fn key’s status?
And for what it’s worth, the things I’m talking about here aren’t even related to keyboard shortcuts like what you’d see listed in the GNOME Settings app, as these aren’t seen by the PC as key “combinations” but as key inputs of their own - like there’s a “brightness up” key as far as the PC is concerned, for example.
Hope that helps! As @grumpey said, using the inxi script (might need installed via sudo dnf install inxi) and posting the results as Preformatted text (for legibility) would be helpful in any further troubleshooting.
I have a funny story related to this (I have a laptop too) - a couple of months ago I could not figure out why a game I was playing (Hades) was running at a very low framerate - like the Nvidia GPU wasn’t getting used (this was on Pop!_OS, which has ‘hybrid mode’ and ‘dedicated graphics mode’).
I went through all the different ways I could think of to trigger the game to use the Nvidia GPU - setting the OS to dedicated mode, adding elements to the .desktop file, reinstalling via Steam, and I just could not figure it out. I put together an extensive post for Reddit with all the steps I had taken, my system info, etc.
Right after I submitted that post, I noticed something looked different on the end of the top bar in GNOME…it was the power icon. The place where the power cord from the laptop itself plugs into the brick (which on my model, then separately goes to the wall) had come apart, so even though I looked at the laptop itself and saw it plugged in, and looked at the wall outlet and saw it plugged in…it wasn’t actually plugged in! As a result, it was using “power saver” mode on battery. Connecting that cord back together fixed the problem!
The reason I mention this story is…sometimes all visual indications would be that a component is working and isn’t the cause of a problem, but there’s something that’s harder to see that still relates to that component and you just need some help looking for it. Hopefully it stays working for you!
If you find that you have some other sticky key issues, the first few seconds of this video may be helpful in seeing how to pop a key off of that keyboard and clean underneath (although I personally get nervous using metal tools for such things - I’ve had better luck with a guitar pick, myself!):