What mattresses are good for chronic pain?

I’ve been waking up so much at night because of pain, and it’s quite literally exhausting. I’m a side sleeper and every hour or so I wake up with horrible pain in the shoulder and hip I’ve been laying on so I have to flip over and repeat, I also have chronic lower back pain. My current mattress is really old and I got a memory foam topper not that long ago but I don’t think it’s made much of a difference, it’s time to bite the bullet and get a new one. If anyone has any recommendations I appreciate it! I’d prefer something on the cheaper side but I’m willing to spend more for something that will actually help