Complex sentence: Abt said that while he was not interested in the drivers' standings, he wanted to finish his home event on the podium, celebrate the achievement with the German spectators, and it was the best method in helping his teammate di Grassi in the championship battle.
Split into simpler sentences: Abt said that while he was not interested in the drivers' standings, he wanted to finish his home event on the podium. He wished to celebrate the achievement with the German spectators, and it was the best method in helping his teammate di Grassi in the championship battle.