Search google for pillowing there a great guide to help you. To sum that guide up. Looks like you’re extruding too hot or perhaps. Not enough infill for your top layers to adhere to. You could also try adding more top/bottom layers that’s saved my butt a couple times with similar issues. Also something that may help is lowering your temp after first layer. My printer likes to go down burning hot to get good adhesion after I lower about 5c.
something that guide doesn’t say could be your issue and is mine. Your spool might be junk ?