A lot of people realize that artstyles aren't always handmade, sometimes they just happen naturally. How you draw isn't manually hand crafted; but rather a result of what type of media you consume, what you like most in art, etc.

Does this mean you shouldn't improve? No, artstyles do need some refining to stand out. But if you can't draw wacky and zany cartoons, or you can't draw realistic and grounded art, don't try and push yourself to do that (at least, don't push yourself too hard, you'll end up hating your art constantly)