Get larger, firmer pillows?

Try a knockoff 2-pack of my pillow.

You can adjust the loft, both through adding/removing fill and smooshing it up in different ways, and they are pretty damned stiff.

I had a regular chunk-memory-foam and loved that.. these are somehow much stiffer.. they have a mix of poly fill and the dense memory foam chunks.. I find them unusable, because soft is my jam.

I'm afraid I cannot be of help, you see I had the same issue. My current pillow was obtained after years of searching, from perhaps thousands, if not billions of pillows tested.
I know not of its name, nor origins. It satisfies me, though I often wonder what would happen once this pillow meets the same fate as the others. Tagless, innards squished to where they shall expand no more... I would like to say this keeps me up at night, though it's a decent pillow. Good luck on your quest.