以头撞墙 meaning in Chinese

bang one's head uaginst a brick wall

It is like banging your head against a brick wall to try to make him change his mind
想让他改变主意，好像就是以头撞墙，枉费心机。
He may not make eye contact with you ; instead he may avoid your gaze and fidget , rock his body to and fro , or bang his head against the wall
或许是他的眼神不会与你的眼神接触，反而刻意?避你的眼光，同时也会坐立难安、前后摇晃身体，或许会以头撞墙。