For spanish is it Me llamo or Yo me llamo
Do they both make sense or is only one right?

They both make sense but Yo me llamo is more formal and is more common. Me llamo is more like “Im called...” and yo me llamo is “my name is...”

The question is who are the cousins of carlos and lisa

Agame in which two or four players strike a ball with rackets over a net stretched across a court. the usual form (originally called  lawn tennis  ) is played with a felt-covered hollow rubber ball on a grass, clay, or artificial surface.