App. continues to show up on Google Activity but not using it.

[Android Central Question]

My partner used Duck Duck Go Privacy Browser and says he has deleted it and not using the app anymore. Although when going through Google activity we continue to find it in the Google Play section of Google Activity saying dates and times when it has been used. What is going on? Has anyone ever had any trouble with Google Activity showing up things that were not used? Please help as this is causing some trust issues.