I have an app called Photo Screensaver on my phone.

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AC Question

This app got installed without me installing it, and there is NO uninstall button, the disable button is whited out, and when I force stop it still stays on, how can I delete this off my phone, I don't want to do a factory reset as all the data on my phone would then be deleted, so please help. I only found the app when I went to all apps, otherwise it was hidden from me. I have an Oppo N1 mini.