Samsung Fold 4 not unfolding 100%. Adhesive/Film?

Recently, I noticed a film starting to lift on the hinge of my Samsung Fold 4. At first, I thought it was just the factory film that I’d forgotten to remove, but when I tried to peel it, I realized it wouldn’t come off. I only lifted a small section before pressing it back down. Immediately afterward, my phone stopped opening fully, and the issue has gradually worsened.

I don’t think the hinge is broken or dirty—I suspect the film has bunched up inside and is causing the problem. I’m considering using a 0.01mm iFixit blade to try and fix it myself, but I’d really appreciate any guidance.

If the blade alone isn’t enough and I want to handle the repair myself (since professional repair costs are so high), what tools or supplies should I buy to make this as easy and successful as possible? Any links to videos, recommended tools, or advice would be greatly appreciated.

Thank you for your help!

—A very stressed Samsung Fold 4 user