When you say Motorolas, I presume you mean Android phones. As long as you only download apps from the Play Store, then you shouldn't need anything else to protect your phone. The Play Store has its own malware scanner Google Play Protect, which should be enough. Google Play Protect
Android has no root and has a more centralized repository of software. They also have Google Play Protect. Given also the low resources, storage and storage speeds of phones, this should be enough although you could consider backups if you have important data. If this is a hobby, consider other ones.