Underextrusion. You probably have burnt filament clogging your nozzle. Get your nozzle to 80C, then set it to 150C and start pulling the filament back out as the temperature climbs. It’s called a cold pull and usually clears this sort of thing.
Set your initial builtplate temp to 70, and the builtplate temp to 55 for printing. At 70 the pla will hit glass transition, then when it cools to 55 the adherence will be very good.
If you want smooth walls, slow the speed to like 40mmps, and squish the layers down to 0.10 mm with a .4mm nozzle if you can.
Play with ironing for the top surface smoothing.
I don’t recommend reducing your cooling much with pla. Maybe down to like 50% at the lowest.
Edit: your nozzle and later height should be fine, I glossed over that. Bring the nozzle down to 200 or so.