Google? more monopolising the web attempts, No thank you.
Converting from jpg, a lossy format to webP another lossy format would produce a worse image than if left as jpg. Quality v size. Faster loading websites might be a benefit if you are on dialup or a very slow broadband, kind of pointless if on a fast connection. From the second link below this is to enable Google's search engine to rate sites with webP images higher up the list as allegedly will load faster.
Interesting details on it here
https://havecamerawilltravel.com/photographer/webp-website/ Not enough to make me mess with it.