Leclerc initially hit out at Ferrari after getting knocked out of Q2 in Montreal when he and the team had failed to capitalise on improving track conditions.
He had initially ventured out at the start of the session on intermediate tyres but, with a dry line emerging, he requested an immediate change to slicks.
The team denied that and ordered him to put a banker lap in before he changed tyres.
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However, by the time he came back out, the rain had returned, and Leclerc was unable to put in a time good enough to make the final Q3 shootout.
Speaking straight after qualifying, Leclerc felt the delay in going to slicks was a mistake as he said that Ferrari needed to stop making such errors.
"I think we are just making our life way too difficult," he told the media. "In those situations, I had a clear opinion. And yeah, we decided to do something else. So, I am frustrated."
He added: "We have to be better than that. And we cannot afford to do those mistakes again. So, I'll speak with the team."
Source: Autosport