According to A Comparative Study of Individual vs. Team Sports Athletes,

Team sports are one of the challenging activities for humans because they demand a wide range of intellectual traits ranging from physical needs to mental needs (Petra G.). Playing on a team sport can help teenagers cope with mental illnesses such as depression, anxiety, and many others. This can greatly reduce  suiside rates and improve quality of life for many individuals. 

Team sports build connections in a way that other activities can’t. People have to learn to rely on others and be reliable. Having to do this can create connections and bonds between people. These bonds are very important in being able to not only accept support from others but give support when needed. Individuals will need this skill when they grow up and become part of something bigger. 

The understanding here is that team sports help make a well-rounded people and aid in the development of one’s social skills. People become more social, helpful, kind, and many other things. These qualities can increase a child’s resistance to poor mental health and help them succeed while also allowing them to have a bit of structure and discipline due to having to show up for their team. 

Kids that play individual sports don’t have the requirement to either succeed or fail as a team. While being on a team might not be everyone’s first choice it is shown to have a positive impact on mental health by reducing loneliness.