Nobody cares about your writing. And it's freeing and empowering to know this.
Nobody's watching for your failures. Nobody will notice that nearly everything you write--at first--will be mediocre crap.
Therefore, you can write whatever you want, however you want. Write as if you're singing in the shower, or as if you're dancing completely alone. Write as if nobody's looking!
It's liberating to know that nobody cares. You can write to your own personal standards. You can take enormous risks and make even bigger mistakes. You can practice, learn, grow and get better.
Don't give up. Keep writing and keep improving.
And then, gradually, readers will care.