Here's a neat trick: When saving a .webp image file, simply rename it to .jpg, and it will open no problem in the Windows Photos app. Personally, I save all of mine as .webp.jpg, just so I can distinguish them apart from other image types in the future.
while that will work for the majority of images, webp is not just a container for jpeg compression and allows for much more (animated webp for example is the near perfect replacement for animated gif yet very few applications support it).
The big advantage is that webm and webp can use a variety of formats really well and allows you to pick the one most appropriate for your content whilst still having a container format that supports it.
animated webp allows for video compression it can dramatically reduce file size while also giving the same benefits as apng.
It also allows for proper transparency so you don't have to fiddle with export settings not to have layers overlap and you can use actual alpha values