print speed ?
filament type ?
temperatures ?

To me that looks like abs printed in an unenclosed printer too fast.

If pla then also printed too fast and without a layer cooling fan.

But the bridging you've got on those is impressive.

Too many people seem to instantly leap to the conclusion that there's soemthing wrong with the printer, when most often it's simple stuff like print temps and speed that is the issue.

How big are those cubes ?