10 Wrestlers The Fans Did A Complete 180 On
9. Ronda Rousey

The above quote may seem a little harsh, but given the circumstances you can understand Rousey's frustration with the WWE fanbase.
For context, the above photo is taken from Survivor Series 2018, shortly after Charlotte Flair unleashed a vicious post-match beatdown on Rousey. Inexplicably, the audience started cheering Flair during the attack, and heckled Ronda as the latter made her way to the back.
To this day, it's unclear why WWE fans suddenly decided to start hating Rousey, especially after widely supporting her since her goosebump-raising WrestleMania debut. As Michael Sidgwick alludes to in the linked article, the former UFC champion had made disparaging comments about "avocado-eating millennials" weeks prior to the match, but the fans' rancorous reaction to Rousey felt massively out of proportion to her remarks.
Unfortunately, Ronda never got over the fans turning their backs on her. Her subsequent WWE run lacked all the spark of her incredible debut year, giving the fans just cause to boo her as she put in one lacklustre performance after another.
Once again, avocado ruins everything (seriously, it's just slime with good PR).