Sometimes it’s how the message is conveyed, rather than what was conveyed. I own a small business and I value feedback. I would obviously prefer negative feedback delivered to me directly rather than posted on social media, so I have a chance to fix the situation.
What is the purpose of your negative feedback? If it’s just a hobby, I would encourage you to re-examine what you’re saying and how you’re saying it. Usually when people give negative feedback it’s because they want to use that business again, but they also want their concerns heard and resolved.
I can’t imagine having nothing better to do than go online giving businesses negative feedback just because I can. No one is perfect, we all have our bad days. If you have a bad experience, try to resolve it with the company before going to social media.