Recover lost passion Last year I played in a chess league in my city (Average of 1800 ELO). But I currently have a sense of boredom with chess in general. I have lost the passion for this game. Winning or losing don't affect me too much. I'm focused mainly on the quality of my games.

Playing chess tournaments takes some preparation: like tactics, endings, openings, ... I don`t feel bored with preparation or training. 

But In the moment when I play with another person, I don´t enjoy it. I enjoy more playing against the computer. but this doesn't make sense. If anybody trains to be better, it is to put this learning into practice.

Could you give me any suggestions to recover the encouragement to play? Any tip to enjoy playing chess tournaments? What tips do you use to maintain your motivation at a high level?
If this only concerns playing in tournaments just play casual non-tournament games. 

I am not sure how you would judge the "quality of your games" if the outcome (win/loss) is not important to you. 

If you haven't done so already, perhaps joining a chess club and playing in team competitions could motivate you.