Isn't their some apps in the Playstore under the name itube @WediMatter
If they are not the one your wanting and the one you do want is via an apk file then I'm afraid due to possible issues with such files you'll need to make use of Google Search.
Think very carefully before considering using apk files.
Daily Driver > Samsung Galaxy s²² Ultra 256Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "