Where did you purchase from?
You also need to sign in to the Microsoft Store on the computer you want to use for MSFS.
The you download the MSFS installer from the store.
Lastly the installer will download and install the rest.
I've done it, through the Content Screen, since day one and I have not had a single issue. And I continue to remove un-needed things after every Update. You'll be just fine if you do this.