Using a Samsung Note 9 running Android 10.
On Aug. 18 an app called "Pets" unexpectedly installed itself and changed my lock screen images to pictures of pets (changes each time). The app does not show up in the list of installed apps. However, MalwareBytes recognized it as a suspicious app, and I deleted it using MalwareBytes.
Today (Aug. 31) the app installed itself again during a period of inactivity. I know the time because MalwareBytes showed the app installation time. I again uninstalled it with MalwareBytes.
How can I stop this from re-installing itself? I searched these forums and elsewhere using Google and could not find any information about "Pets".
Thanks.