Question: I decided to start writing short stories to improve my writing before getting back to my book and I think they are turning out really good. I even posted one of them in a competition and even though I did not win 12 people liked my story (Which to me is A LOT) but I was wondering if there is some kind of website where real people can look at your story and help you improve (For free)? Answer:
A number of sites like what you're looking for emerged about ten years ago. Basically, a lot of people in the wake of the 2008 financial crises decided to try their hand at writing and publishers were getting swamped with manuscripts (more than usual), so they created sites where people could post their stories and get feedback from other readers (and stop bothering publishers until or unless their writing was really good).
Most of these sites died out, but one that survived is Wattpad (https://www.wattpad.com/writers/).
Just be aware that, although the site states that over 1,000 stories people submitted to the site have later been published or adapted for film/TV, that is a tiny, almost negligible number compared to how many stories people have posted on the site. Also, most professional editors and agents are too busy reading direct submissions to ever have time to read stories on Wattpad. In other words, it's not a reliable route to publication.
Also, not all the feedback you'll get is valuable or accurate, so you have to use your own judgement and not be a slave to people's comments.
On the other hand, if you are one of the fortunate few who gains a readership on Wattpad and then later publishes a different work, that might help your sales.
Best of luck.