not happy with Ryobi

I use the Ryobi Flux core wire for the first time. I usually use a different brand but my usual supplier is out of stock. But i can definitely say. Ryobi brand of flux core wire for MiG welding is the worst to use by far..it does not bond with the metal..I just started with a job ,so its a whole 5kg of wire wasted..back to arc welding rods for this job