Living in an old creeky house!

I’ve been living in my current house for 8 years.. I’ve had some creeks when I moved in .. but over the years it has gotten worse.. I don’t think there is a spot on the floor that doesn’t creek!! I have three boys...I have gotten around the creeks with my first two kids but it’s impossible with my third.. as soon as I try to leave his room he starts to cry because he hears me leaving! Or if I get out I have to sit on the bed or couch or go downstairs and can’t get anything done when he’s napping!...It’s driving me insane to the point I just want to burn this house down!😡 sorry that’s just how frustrated I am... what can I do!!! Please any advice?!?!