there is a replacement called revanced, here is their github page.
You will have to compile the youtube app yourself, their revanced manager will help you with that.
And you have to download the latest supported version that is 18.19.35 from apk mirror.
If you need any more help feel free to ask me :)
its not the supported way of doing it, and revanced doesnt release apks and therefore the apk you provided its not safe to use, even if there is nothing malicious in this apk you are never sure of that, so its better to just make the app with the manager yourself and btw its not that hard to do