Especially on social media, but even in an Amazon review, there will be readers who, often unfairly, criticize your writing.
For example, Joseph Mutizwa gave me a one-star review for The Allure of Nymphets because, as he wrote, my book was "Not quite what I expected." Really?
But John Lescroart, the New York Times bestselling author, has given us some advice on how to deal with (unfair) criticism. Lescroart shared with Advice to Writers that a writer should continue to have faith, continue to improve, and continue to produce:
There will always be people who criticize your work, but if you continue to believe, improve and produce, you will win out in the end [إن شاء الله].