What are /r/Google_Pixel_Phones' favorite Products & Services?

From 3.5 billion Reddit comments

Upload your desktop photos to Google Photos using your desktop's web browser, then you will see them on your phone in Photos. From there, you can then go to the display settings on your phone and select Wallpaper. Then you simply select the photos that you uploaded to your Google Photos account.

By "Android OS", I'm going to assume you had a Galaxy phone, which does have a My Files app for accessing the file system (FYI, Pixel is also Android). I'd recommend Solid Explorer: https://play.google.com/store/apps/details?id=pl.solidexplorer2