Images are cloud-based so even if you work you image name, like ocean.jpg, it will be transformed to something like sdfbf2dx45gv6d863xdv72d1ccf1-ocean.jpg and you can’t do anything about it.
This said, I have checked many many times with SEO experts, and they really don’t care about cloud-based images: they don’t care where the image is hosted (it’s not on the site’s domain) and they don’t care about the name being made mostly of gibberish. So I am not sure that “SEO optimized naming” is a thing at all.