Murray, who missed last month’s Australian Open after testing positive for coronavirus, beat Dutch contemporary Robin Haase at the ABN Amro World Tennis Tournament in Rotterdam on Monday.
The three-time grand slam winner told reporters after the match that he recently deleted his social media apps from his phone after being inspired by The Social Dilemma documentary, rather than down to online abuse he regularly receives about retiring.
“I don't have Twitter on my phone and I deleted Instagram last week,” he said. “Not because of that [the retirement comments]. You see those things on Instagram and social media if you're on it, obviously, and if you have the app on your phone. But I'd watched a while ago that Social Dilemma movie.
“I thought it was brilliant and then a couple of days after my match last week, I watched an interview with all the people that were responsible for making that and I was like, 'Yeah, I’m done.’
"I deleted them off my phone but yes, it’s tough.”
On Monday night, the 33-year-old said that he has found things “a bit of a struggle” since he developed Covid-19 in early January.
“It’s not easy,” he said, “every time I lose a match I’m getting told to retire, that I should stop playing, that I’m finished and got nothing left or whatever and it’s sad and all of these things.”
He added: “I feel like I’m playing for my career just now, each time I step on court, which is a motivation in some ways.”