If you have to complain then try to be the best of those who complain....

Imām Ibn al-Qayyim {may Allāh have mercy upon him} said:-

The ignorant one complains about Allāh to the people!

This is the height of ignorance in complaining and in whom the complaint is about.

For if a person were to truly know his Lord, he would never complain of Him.

If he truly knew people, he would never complain to them …

The gnostic complains only to Allāh,

and the most knowledgeable of the gnostics are those who complain to Allāh about themselves, not others …

So there are three levels:-

# 1/-The most contemptible of them is to complain to people about Allāh;

#2/ The loftiest of them is to complain to Allāh about oneself;

#3/ The middle level is to complain to Allāh about others.