It is not true that if we had true faith we would not be sad. Prophets (as), and righteous people experienced a great deal of sadness. The Quran is full of stories in which the central theme is sadness. Sadness is a reality of life. The Quran is not there to eliminate sadness, but to navigate it. Sadness is one of the tests of life, just as happiness, and anger are tests.
Nouman Ali KhanIf you have friends or family who are not practicing, give them your company and not your judgment. They need your patience and your love. Allah is sufficient for judgment and He subhanahu wa ta'ala is a perfect Judge. We are not.
Nouman Ali Khan