Hi Simon -- I'm sorry that you are struggling with this.

It isn't wrong for males to show emotions, if by wrong you mean a moral judgment.

It is true that some segments of society are particularly unaccepting of it. Some of the segments of society where it seems strongest are traditional working class male groups, such as firefirghters, police, and even newspaper reporters. New immigrants groups arriving from patriarchal cultures are not accepting.

I have seen some Muslim men cry, but I'm not familiar with that culture to the extent where I can say whether such expressions are more normaltive.

More artistic co-cultures and my younger students seem much more egalitarian and accepting.

I hope you will find a place where are comfortable expressing your emotions in way that are meaningful for you.