A tennis game

I belong to a tennis club of my company. Our team belongs to tennis league where we play against other companies' tennis club. Each league has five teams and we play agains 4 teams. If we can be first position, we can move up to a higher league.  There are 10 grades of league and now we are in 7th league. Last Sunday, I lost first time this season, and today I lost again... I know that one of the reasons that I lost is that I didn't practice enough. But still it is sad when we lose... But I don't have a time to practice... Ummm, what shoud I do...