I emptied a few spools of hp pla. Those were really good, prints have a really smooth finish.

From the picture: it is maybe an ender-2 pro. I really like its portability.

It looks idk... overextruded and melted? I would maybe try a few degrees lower printing temp (with the part fan at max), and reprint it with a somewhat dialed back flow value. I don't have much experience with really big nozzles. I only printed a few bigger/big parts a while back with a 1mm nozzle on a stock cr-6 but those looked "good-ish".

You might should get a bigger part cooling fan, because the stock 4010 fan might have difficulties to cool the tremendous amount of plastic that could came from a 0.8 or a 1.0 mm nozzle. Slowing down the printing process can help but the nozzle can melt the previous layer and that is not so good.

I probably would try to do a test with a somewhat lower layer hight, too.