Office politics are unavoidable

...it's all in how you manage them and prevent them from becoming toxic (HBR):

The best managers recognize the psychological underpinnings of office politics and do two things in response: they manage the way they themselves behave, and they are careful about how they motivate others. People who are perceived as apolitical display high levels of congruence between what they say and what they do, and they are also good at rewarding others for what they were required to do, while holding them accountable for what they fail to deliver.

As such, good leaders focus on the bright-side personality characteristics associated with their ability to navigate office politics: social skills, emotional intelligence, and intuition. They recognize that the more secretive, selfish, hypocritical, hierarchical, and incompetent they appear in the eyes of employees, the more political the organization will become. So they are driven to come across as competent, transparent, approachable and altruistic.

And in motivating their employees to try harder, they avoid pitting employees against one another and instead focus on out-performing common adversaries: the company’s competitors. They do this through articulating a meaningful mission — a vision that resonates and motivates people to achieve a collective goal. This keeps the team focused on beating their competitors, rather than each other.