"Unmet expectations" refers to situations where what we expected or hoped for does not happen or is not fulfilled. It means that something did not meet or match our desired or anticipated outcome. Full definition
The problem of unmet expectations in marriage is primarily a problem of stereotyping. (goodreads.com)
Experiencing anxiety, depression, feelings of being stuck, loneliness, spiritual challenges, struggling with communication issues, moving through discouragement, and unmet expectations in yourself and / or loved ones, is not a sign of failure or weakness. (psychologytoday.com)
It's a lot better than dealing with unmet expectations. (biggerpockets.com)