The striker has scored three goals in nine games for the Red Devils so far this season but says he is disappointed with his return so far.
The 31-year-old’s last goal was the last-gasp equaliser against Chelsea in the Premier League at the end of October.
“Three goals in nine games is not enough,” Van Persie told Dutch newspaper De Volkskrant.
“Against Chelsea I had a nice chance and I had three options: chip it, go round the keeper or just [shoot] straight at the goal. I chose the last and safest.
“If I wouldn’t have thought it over I would just chip it. I just have to trust again in my intuition.”
MORE: Man United latest news
MORE: Arsenal latest news
MORE: Chelsea latest news
MORE: Liverpool latest news