I don’t know what a .webp file is but I don’t like it. They’re like a filthy prank version of the image/gif you’re looking for. They make you jump through all these hoops to find the original versions of the files that you can actually do anything with.
They also don’t, by default, support HEVC and charge you to open them now… it used to be a free app on the Microsoft store.
https://www.windowscentral.com/microsoft-now-charging-hevc-video-extensions
That’s not on Microsoft. HEVC is not royalty free standard, so Microsoft had no chocie.