I was always a back sleeper until a few years ago. Then this spring after back surgery, I found side sleeping was the only way. Finding the right pillow led to buying a half dozen diff types to fit...which none did.
A friend told me about these cube pillows for side sleepers, and I bought one. I've had it for 4 nights now and every night has been a great longer sleep.
No waking and turning at all.
It comes in three different sizes. It works great for me.
https://www.amazon.com/dp/B09H2FML5S?psc=1&ref=ppx_yo2ov_dt_b_product_details
