Please state in which country your phrase tends to be used, what the phrase is, and what it should be.
Example:
In America, recently came across “back-petal”, instead of back-pedal. Also, still hearing “for all intensive purposes” instead of “for all intents and purposes”.
“Could of…”
It’s “could have”!
Edit: I’m referring to text based things, like text and email. I can pretty much ignore the mispronouncing.
I think they just heard could’ve or meant to say could’ve
Also they’re/their, your/you’re, here/hear, to/too.
That’s a dialectal difference, not an error.
Not when written
It’s very much not recommended, and generally seen as an error. But this article puts an asterisk on it.
https://www.merriam-webster.com/grammar/whats-worse-than-coulda
It’s definitely a mistake, but I think it has slipped by because spell check wouldn’t have a reason to mark it, and not everyone uses grammar check, so they think it’s correct to spell it out by the sound of the contraction.