Enable to allow installation from your browser. Download the specific version from a reputable mirror site.
Android 6.0.1 stopped receiving security updates in . Using this OS online poses significant security risks. It is highly recommended to use these devices primarily for offline media or basic tasks rather than sensitive accounts.
If you have TWRP installed, you can flash a "Youtube Installer" zip from Magisk modules, but that is outside the scope of this basic guide.