ShareVincent Kompany felt Bayern Munich's fear of injuries contributed to them having to come from three goals down to defeat Mainz.Bayern Munich produced a four-goal comeback to defeat Mainz 4-3 in the Bundesliga on Saturday, but Vincent Kompany felt they did everything wrong in the first half.Mainz stormed into a commanding 3-0 lead against the champions thanks to first-half goals from Dominik Kohr, Paul Nebel and Sheraldo Becker, as Kompany rested players ahead of the Champions League semi-final against Paris Saint-Germain on Tuesday.Harry Kane and Michael Olise were sent on for the second half, with Jamal Musiala entering the fray after Nicolas Jackson pulled one back for Bayern in the 53rd minute.Three goals in the space of 10 minutes from Olise, Musiala and Kane – his 33rd top-flight strike of the season – completed the turnaround, with Mainz losing a Bundesliga home game in which they led at half-time for the first time since October 2021.Asked what went wrong in the first half, Kompany replied: "Everything, even though the first 20 minutes before Mainz's goal weren't so bad."We had a lot of possession but couldn't get into their box. Then we conceded three, and it felt they could have scored four or five."There was no big analysis at half-time – it was just about quality and mentality. The team accepted the fight and threw away any fear of injuries that was maybe holding them back."Kompany insisted he had always intended to use star trio Kane, Olise and Musiala and did not resort to bringing them on because Bayern were trailing."It was planned. I don't want to just leave everyone on the bench or give them a holiday, and at the same time I don't want to take unnecessary risks. It was about keeping the fitness up," he said.Olise's goal was a particular highlight, with the France international cutting in from the right and curling an exquisite left-footed shot into the top left from the right corner of the box."Michael has set the bar high for himself, so I would've been disappointed if that didn't go in – and that's absurd," said Kompany."It shouldn't be normal, but he's made us get used to it."Vincent Kompany felt Bayern Munich's fear of injuries contributed to them having to come from three goals down to defeat Mainz.Bayern Munich produced a four-goal comeback to defeat Mainz 4-3 in the Bundesliga on Saturday, but Vincent Kompany felt they did everything wrong in the first half.Mainz stormed into a commanding 3-0 lead against the champions thanks to first-half goals from Dominik Kohr, Paul Nebel and Sheraldo Becker, as Kompany rested players ahead of the Champions League semi-final against Paris Saint-Germain on Tuesday.Harry Kane and Michael Olise were sent on for the second half, with Jamal Musiala entering the fray after Nicolas Jackson pulled one back for Bayern in the 53rd minute.Three goals in the space of 10 minutes from Olise, Musiala and Kane – his 33rd top-flight strike of the season – completed the turnaround, with Mainz losing a Bundesliga home game in which they led at half-time for the first time since October 2021.Asked what went wrong in the first half, Kompany replied: "Everything, even though the first 20 minutes before Mainz's goal weren't so bad."We had a lot of possession but couldn't get into their box. Then we conceded three, and it felt they could have scored four or five."There was no big analysis at half-time – it was just about quality and mentality. The team accepted the fight and threw away any fear of injuries that was maybe holding them back."Kompany insisted he had always intended to use star trio Kane, Olise and Musiala and did not resort to bringing them on because Bayern were trailing."It was planned. I don't want to just leave everyone on the bench or give them a holiday, and at the same time I don't want to take unnecessary risks. It was about keeping the fitness up," he said.Olise's goal was a particular highlight, with the France international cutting in from the right and curling an exquisite left-footed shot into the top left from the right corner of the box."Michael has set the bar high for himself, so I would've been disappointed if that didn't go in – and that's absurd," said Kompany."It shouldn't be normal, but he's made us get used to it."