A couple thoughts:
Overall this looks like under-extrusion, I’d try a few things:

1. Check the flow rate in your slicer. Make sure it didn’t get bumped down by accident.
2. Check the filament diameter in the slicer. This getting set wrong can cause all kinds of headaches.
3. Slow down the print. The extuder may not be able to push plastic fast enough to keep up with what you are trying to do.
4. Raise the tool temperature. The plastic may not be melted enough to flow well.
5. Check for a clogged nozzle. Try doing a cold pull to clear the nozzle. Google “cold pull” for good instructions on how to do one.
6. Watch for the extruder slipping while printing. If the extruder has worn, it’s teeth may not be engaging the filament well and not pushing it as expected.
7. Try different filament. Maybe you have a bad batch and it’s just giving you problems.
8. Replace the nozzle. They do wear out and start causing funny problems.