If you need a service to strip copyright restrictions from imagery for commercial use, Variart is worth a look. Variart is an image processing tool that uses AI to synthesize imagery with the copyright removed, letting you upload individual images or batches of them to get unrestricted, stylistically consistent results. That's useful for designers, marketers, bloggers and teachers, and the service offers several tiers of image jailbreaks and free credits.
Another possibility is Impossible Images. The service offers a library of AI-generated stock images and an AI image generator that's easy to use to create high-quality, unique images for social media, design and marketing projects. The service promises that AI-generated images are created without reference to existing works, so they're suitable for royalty-free use in personal and commercial projects.