Stewart Copeland reflected on his time with the Police, admitting that his differing opinions with Sting often led to tensions. In a video with Drumeo, Copeland demonstrated his approach to playing music he didn't know, emphasizing his instinctual style. He acknowledged his tendency to forget Sting's ideas and play his own "bullshit" over the songs. Copeland explained that their conflicting views on music creation stemmed from their different reasons for making and listening to music. He described his focus on the riff as a drummer, contrasting with Sting's emphasis on lyrics and singing.
Source: https://ultimateclassicrock.com/stewart-copeland-sting-relationship/