This is one of the worst scenarios that many teams face. The star player of the team gets injured and doesn't get a chance to play for a few months, then the performance of that team decreases and it can't be a competitive team like before. Actually, there are very good football players in every team, but since these players don't get enough game time, their stars don't shine, and after an injury or something similar happens, they feel a lot of pressure on themselves and can't actually perform as they should
When a player contributes a lot to his team, then when the player is absent it will be something that can be felt as a loss of that figure. Many teams eventually decline when they lose their mainstay players.
But in my opinion that is also not good, because it shows how the team relies heavily on just one player, even though there are 11 players playing at the same time. Sometimes not having a player who is very reliable in my opinion is better, because they will not be confused when the player suffers an injury. Yes, I can really understand how we cannot eliminate this habit, because there are always players who stand out more than the others in a team.