How can I bring back app drawer in Oppo A57?

[Android Central Question]

I was just surfing in the internet when I noticed that my app drawer was gone. I don't remember accidentally deleting it though. I am not using any launcher that time so I really am having a hard time, what to do when my app drawer in the main screen is gone. I have searched all over the internet but I cannot find the answer as to where I can bring back the app drawer without the launcher. Please help me.

 

[Roseann Aquino]

Bring back the software

 

[B. Diddy]

Welcome to Android Central! You're responding to a 4 year old post -- do you also have an Oppo A57, or something else?