What is the best AI tool for restoring old photos?

Hi everyone, I just digitalized hundreds of old photos and some of them didn't look good. I heard these blurred images can be repaired or enhanced with AI tools. I want to digitally restore a collection of old, damaged family photographs. Many have cracks, spots, and faded areas. I’ve heard AI tools can automate a lot of the repair work, but I’m unsure what is the best AI photo restorer tool for restoring old photos? I'd love to hear about your personal experiences. What has worked well for you in terms of ease of use, quality of results, and handling of complex damage?  Free options are a plus, but I’m also open to paid services if they are truly superior. Thanks in advance for your suggestions!