Even after installing, you may see a "Switch to YouTube.com" or "Version too old" message. This occurs because Google has cut off server-side access for these older builds. 2. Best Alternative Apps (Lightweight & Smooth)
The last official version of the YouTube app that supported Android 4.4+ was , released in late 2019. Download Youtube Android 4.4.4
You can find these legacy versions on APKMirror , a trusted repository for older application files. Even after installing, you may see a "Switch to YouTube