Spy apps for free

First I want to start off by saying, without physical access to the target phone, any spying done will be very limited. I have personally tried a few of these so called “free remote access” spy apps and they were basically a waste of time. From my experience the only phones that allow remote installation of spyware are iOS phones, Apple phones. However, in order to remotely install a program on an iOS phone you would HAVE to have the iCloud credentials, or log in & password.
Hello, I know how to help you. I myself recently followed my girlfriend, to be more precise, I read her correspondence with other people. I found a spy app in the article - https://eyezylite.com/ . This is a very cool article, because there are several such applications here and you can choose the one that you liked the most. There are also detailed instructions for downloading and a description of the full functionality.