Can't put installed app on my home screen

I have an oppo R11s, and it has no app drawer. All the apps are usually installed straight to my home screen but there are some apps that haven't. I can search for them but when I do there is no way for me to actually put them onto my home screen. I have looked everywhere on the internet but I can't find the answer. Long pressing doesn't do anything and I don't have wifi/enough data to reinstall the apps. Any help is appreciated!

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