French phrase
J'ai du mal à m'exprimer en ~.
Meaning
I have trouble expressing myself in ___.
When to use it
Difficulty expressing thoughts in a language. Often reflects limited vocabulary or grammar and softens a modest admission of difficulty.
Example dialogue
J'ai du mal à m'exprimer en français.
I have trouble expressing myself in French.
Je peux parler plus lentement si tu veux.
I can speak more slowly if you want.