I think literary magazines and blogs are good places too. Some magazines accept submissions of short fiction, and blogs allow you to have your own space to showcase your pieces. For instance, you can start your own blog on WordPress or Blogger.
You could try websites like Scribophile or Figment. These sites are specifically designed for writers to share their work and get feedback. Also, social media groups dedicated to literature and writing can be a great option, such as those on Facebook or Reddit.