<li>There are other <ahref="https://search.f-droid.org/?q=video+player">apps</a> available that deal with offline playback, in case the phone doesn't have one.</li>
<li>One option that could reduce friction between using NewPipe and an external player is <ahref="https://f-droid.org/en/packages/com.brouken.player/">Just Video Player</a>, available on F-Droid, which is also based on ExoPlayer like NewPipe's player.</li>