iMovie not working on my iPhone 16

When I upgraded to iPhone 16 I no longer have access to my iMovie projects. I can not open and use iMovie. When I open the app I am told I need permission for photo library. When I tap “continue” the app freezes and will not let me see or use my projects. I have went into - settings -privacy and security- but can’t seem to allow permission for photo library on iMovie. How do I fix this?