APP DRAW Dissapearance

I use Wlndows Launcher on my Samsung Android Tablet. Recently the important APP DRAWER vanished, around the time of an update to Launcher [?]. The main problem now is I cannot find how to get it back, none of the normal methods work. The icon is no longer displayed, as it was, in the Dock or anywhere else. and the Drawer does not appear when swiping up from the bottom of the screen. Are there other ways? I can edit all the Drawer display features in Settings, apart from the essential one.

It is my Tablet which has lost the App Drawer, it is OK on my phone. What I have had to do as a temporary (I hope) work around is to install another Launcher and use the Drawer in that. I have chosen Nova which has been quite easy to use for this purpose. At the same time I discovered another, which does not help with this problem, but may be useful as it mimics my PC on the Android. It is called My PC. It launches Windows Folders with the same content.