I'm writing this piece of text, and sometimes it can be tricky, because English is not my first language, so obviously most of the time I think in my mother tongue.
We have this phrase in my language, a word-for-word translation of which is 'to fall in someone's eyes' - it is used when you do something that makes the other person greatly disappointed in you to the point where they don't want anything to do with you.
I browsed the Internet, and this phrase does not seem to be used in English. But I also failed to find anything similar. All the other options I was considering just don't convey the seriousness and importance I'm looking for.