Many people are going to say Linux. It's probably annoying to hear, but its just the truth at this point. It probably seems daunting to switch over, but let me give you a very brief suggestion from a beginner on how to smooth over the transition.

Load up youtube and watch a few videos reviewing linux distributions for beginners just to see what's recommended. My personal recommendation is to stick with a distro that uses KDE Plasma as the desktop environment since it will be very familiar coming from Windows. Once you decide what looks best for you...

Check and see if your computer has an available SATA port on the motherboard. If it does, grab yourself a SATA SSD and put your choice of a Linux distribution on it. Once Linux is up and running, set your BIOS to boot into Linux by default. Use Linux for everything you can and slowly migrate your workflow over to the new OS. Keep Windows as it is on its original drive and boot into it whenever you encounter something that doesn't work or you haven't set up on Linux yet. Don't stress about rushing through this part. You have almost a year before Win10 is unsupported. Take your time and enjoy the process.

Over time, your Linux OS will become very useful for you as you uncover more ways to use it instead of Windows and Windows will be reserved for those infrequent edge cases where your needs are not met by Linux. This decouples you from the Microsoft ecosystem, making their enshittification less impactful on your life. I followed this exact path and I'm now a near full-time Linux user with Nobara as my chosen distribution and I could not be happier. I love my PC again.

The only thing I use Windows for now is sim racing games, as I haven't yet dedicated time to find out how to get the expensive sim racing peripherals I own working on Linux yet. Apparently it's possible and some people have had great success with it. This is something I will be actively working on over the coming year. Everything else I own runs perfect on Linux. I run a home studio so that means a lot of audio peripherals and specialized software. For 95% of my use case, Nobara just works.

The transition will take some work, but in the end if you can get yourself away from dependence on Windows, the options and freedom available to you expand like crazy. Its worth it just to show Microsoft that no, they no longer have a stranglehold on desktop PC users. The more we engage with non-mainstream options, the more the mainstream has to behave itself.