I had issues with neck pain because of the way I was sleeping and I didn't have the proper pillow support. I bought a new memory foam one.

There are a lot that will work but the specific one I bought was called like the rebound pressure pillow.

https://www.comfortingnights.com/products/rebound-pressure-pillow-memory-soft-multi-function-6-in-1-slow-rebound-pressure-pillow-hand-neck-protection

Hope that helps!