[make] {oneself} understood

to express one's thoughts and ideas clearly and effectively so that others can understand them easily

I want all of this cleaned up right now, or I'll take away your video games for the weekend.Have I made myself understood?
She spoke slowly to make herself understood by the international audience.
The teacher made herself understood by using simple words and gestures.
She raised her voice to make herself understood over the noise in the room.
They needed to find a way to make themselves understood despite the language barrier.