Linux

I haven't seen anyone mentioning this yet, so I will: if you're looking for the most accessible way to use Linux, nothing beats Endless OS. It's a Linux distribution that is built specifically with ease of use and offline usage in mind (if you don't know what a "distribution" is, feel free to ask). It's pretty different from Windows (the user interface is nothing alike, you should download every program/app from the App Center instead of downloading from your browser), but I think you'd get the gist of it quickly.

Now, whether you would want to change to Linux or not greatly depends on what you use your computer for. If you use your computer mostly for browsing the Internet and making Word documents, then I think you should change. If you play videogames on your computer, but mostly via Steam, then Linux won't be bad. But if your work depends on something like Adobe Photoshop and you really aren't available to using any other program, then you would not want tochange to Linux, because Photoshop isn't compatible with it.

TL;DR: Have a look at Endless OS; and please share what you use your computer for / what devices other than a normal keyboard and mouse you normally connect to your computer, so we can help you determine whether you should just switch to Linux or not.