I recommend against the Steam version, actually. It adds a layer of complexity when buying add-ons from the sim marketplace, and you need to keep Steam running. I’d suggest buying it from the Windows Store or Xbox app included in Windows 11. (If you use the Xbox app in Windows 11 to buy it, you’re actually buying the PC version. Don’t even get me started on the branding confusion there.)
Also, when you start the sim and it prompts you to download the rest of the files, I suggest choosing a custom folder such as D:\Flightsim. Lowers the risk of having to re-download all of the files if you decide to participate in a beta, reduced long-filename issues, and just a lot easier to find your Community folder.