Best you delete this discussion of misunderstandings.
And maybe consider using lossy webp for all the images and not for only some of them.
Worst example is file 35 to 43 in that folder I cited. Same static background for 9 images encoded in lossless. That is what I found and that is why I made the initial post suggesting you should use lossy webp.
Also your initial reply was "Hi, thank for the comment but i think will not do that. ". What was I supposed to think?! You refused to use lossy webp, and later claim to have used it all along. Misunderstandings all around.