you could consider just writing in notebooks and gdocs first instead of publishing online, since anything publicly available online will invite public scrutiny sooner or later. i spent most of my teen years just filling up journals with stories, crappy or otherwise. nowadays i feel solid enough about what i write to put it out, but i'm also too old to care what others think since i primarily write original fiction for myself.
if you're second guessing yourself and can't figure out what's the problem, you could 1) ask some trusted friends to give you their input, 2) ask strangers like us what we like/don't like about your story, 3) compare it with good stories you DO like to see (technically speaking) what they did well and what you didn't grasp. i agree with everyone that writing's a gradual process; you need to wear down the granite before you get something smooth and polished.
p.s. numbers don't mean anything, they're oversimplified bits of data that can only generalize info about you, but don't go into the fine details. people can drop stories for a myriad of reasons or something as simple as "i don't like this character's name," so using them to gauge whether your story has "clout" or not is a hit or miss (especially if your story's still new! even the tiniest variables can lead to huge changes!). do you like your story? do you enjoy writing it? do you think it's something worth telling and reading by the end? let yourself inspire your words.
last but not least, no matter how many people love or hate your story, you're the one who decides if it's worth writing/finishing in the end. the power is in your hands.