Should we say “in the end” or “at the end”?
The answer is both, in slightly different situations.
“In the end” is more metaphorical, and “at the end” is more literal. Let's look at examples.
Lesson text & video: https://www.espressoenglish.net/in-the-end-or-at-the-end/
En liten tjänst av I'm With Friends. Finns även på engelska.