Help! Device Manager is auto-iinstalling apps from ads

I have decided to just uninstall and not use any apps that do this in the future. All I know is that the malware ads come from something called applovin.

I will be much more selective of what I get from the play store because even some popular apps shouldn't be trusted.

It is just too much of a security risk that that T-Mobile has created with their Device Manager allowing allowing 3rd parties to automatically download and install of potential malware.