You'll be corrected by someone with enough education to believe they are correct. English speakers police the English language in a very unorganised way.

There are no appeals. Accept that you were wrong or find a reputable style guide or dictionary that supports your position and tell the person who corrected you to get lost.

New words happen, but if you can't get the right spelling of "they're" or "their", "your", "you're" or "yaw", "its" or "it's", etc or use a unique spelling of a word I can point out in a dictionary how you're wrong

If you mismatch brackets or do odd punctuation I can point out how it looks bad or reads wrong

I'm not surprised that you're confused