Some changes to help improve the text:
"While I understand the importance of learning how to follow orders and how to play along in a group situation, I can’t help but prefer individual sports as a means of enjoyment and self-improvement.
Firstly, the idea of playing a sport like tennis or golf against a challenging opponent all by myself is really exciting. I only have my skills and tactics to rely on and I can only blame myself for my mistakes . That alone is enough to cheer me up and put me in the mood to train harder and harder in order to achieve my goal.
Apart from that, I don’t have to deal with commom team problems, such as stubborn teammates, bossy leaders, and trust issues. Also, I can make my own training schedule without being restrained by other people’s duties. Thus, individuality provides freedom.
In conclusion, I can see no downside in going solo. You only have to win in what regards your self-esteem and confidence and the fun of the process makes it worth the effort."