Pilsners/Lagers are not easy to brew, especially if you don't have tight temperature control (temperature controlled fermentation chamber).
Your extract kit may also limit how it will taste, but it should not be overly bitter or acidic. As said before, your beer is still young, it should improve over time.
It's difficult to compare an extract kit brewed with an ale yeast to commercially available Pilsners and Pilsner style beers. Those are brewed all-grain, some with very artesian methods, and fermented with a Lager/Pilsner yeast that may take as long as 2-4 weeks to ferment at 50-55°F, then allowed to condition for a few days at 60-65F, before they get lagered (stored) for 4-6 weeks, or longer at near freezing temps (30-35F) to mature and become crisp and crystal clear.
Before attempting another, I recommend reading up on how to brew beer the right way. You can brew delicious beer from malt extracts, even Lagers/Pilsners. Kit instructions are notably simplified for easy access, not necessarily for producing the best possible beer. HBT (this site) is a wonderful resource, with helpful people.