I thought they used a kilo of sugar usually (2.2 pounds) and that's way too much. If you used 3.3 pounds of sugar, that would explain the poor result. I think it's only about 3.3 pounds of malt extract in those kits (which are poor kits to being with), so that's 50% malt and 50% sugar- pretty gross.
Using malt extract instead of sugar will be a huge improvement, even though the prehopped coopers extract and their yeast is still poor quality. If you want to continue to make beer, I'd suggest using better quality kits and keeping them under 65 degrees during fermentation. There can be excellent beers made from good quality kits.
I agree, I've found that the brewers best kits make a damn decent beer! You can make little changes and add things to them and they turn out quite nice... Hey look I'm drinking an IPA from a BB kit right now!
The Cooper's OS lager can comes with ale yeast. But the others,like the Thomas Cooper's Select Heritage lager is a true lager. The OS lager version does fine at 65-69F. I use some Cooper's cans as a base with either partial mash or DME & hops. Makes a better beer. The WL029 ale/kolsh yeast is working out pretty good so far. Can't wait till both batches are ready. Bottled the dark lager today.