Based on the search results, there are different events that happened to Cristiano Ronaldo. Here are the details:

• In September 2021, Cristiano Ronaldo joined Manchester United for a second time when he moved back to Old Trafford from Juventus.
• In December 2022, Ronaldo was dropped by Portugal in a tournament knockout game without him in the starting line-up for the first time since the semi-finals of Euro 2000. Portugal played and won without him, and the Athletic takes a look at why Ronaldo was dropped and what sort of involvement he could have in the rest of the tournament.
• In 2022, Ronaldo was effectively sacked by Manchester United after the fallout from his inflammatory TV interview with journalist Piers Morgan. He was not wanted at Manchester United, which was looking to offload him even before he lit up the club and the coaches and the players in that infamous Piers Morgan interview. He then shocked the world by choosing Saudi Arabia as his next destination.
• In September 2023, Cristiano Ronaldo almost got injured after a fan that wanted a selfie accidentally stamped on him.

Therefore, Cristiano Ronaldo joined Manchester United for a second time in September 2021, was dropped by Portugal in a tournament knockout game in December 2022, was sacked by Manchester United in 2022, and almost got injured by a fan in September 2023.