It really does take time and practice, though. Believe me, my first attempts at animated pixel art were absolutelyterrible. Those were made back around 2003 or 2004.
Animation isn't something you really become good at overnight. I started animating around 10 years ago and I'm still learning. Even if you look at your work now and think "man this is just not what I hoped it would be," just keep practicing for a few more years and look back at your work later down the line. You'll see how far you've come along.
Like I said before, don't give up. It also helps to take an animation class, too. After two years of taking an animation class, my stuff went from looking like this: [link] to looking like this: [link]
Surely there must be something-- maybe even an online course you could take?
Normally I animate my non-pixel animations at around 24 fps, which means I draw 24 still images to fill up a second's worth of time. The pixel art I post is usually less than that, though (maybe 20 fps). I think 16 frames per second is the minimum frame rate required to trick the human eye into thinking it's seeing a moving image-- any less than that and you can actually see the individual frames.