Quiet often I find myself fighting with autocorrect, it'll eventually let me write the correct word I want but autocorrects it right as I hit send.
A recent example of that was on Discord when my phone kept autocorrecting a word to the incorrect spelling (that it only picked up because I typo'd the word a few times by mistake). I ended up re-posting that word to the correct spelling 3 times, fighting with autocorrect all the while (took 9 attempts of writing it out) before giving up. The annoying thing was it was just one letter that was wrong and I'd deleted what I'd written before I finished the word when I realized I'd typo'd again.
I have a German keyboard on my phone for language learning. Autocorrect sometimes changes failed attempts to English spellings - sometimes it gets the right German word, other times it's way off and I don't even know what the German word autocorrect picked as a replacement means and it sends before I can catch it.