I agree with @PickyPicky3 . You must be using an ancient computer. I upgraded from Windows 10 to Windows 11 for free. I have not been asked to buy anything (unless you mean the Office subscription, which I don't need.)
There are messages from HP to computers that are no longer likely to have replacement parts stating that you may want to look into a newer computer. I think they mean the disc drive computers since the newest ones are all SSD. Mine is a disc drive, and while I love it, the newer ones do run quieter and cooler.