The only app I choose to watch videos is youtube because it has almost all kind of videos from fiction to non fiction, educational, entertainment, funny videos etc.
And the very best part of YouTube is one can earn money by creating channel and uploading videos to it.
If I have any doubts regarding any apps or website, I simply go to youtube to find out.
Youtube is the best platform to watch videos and I learned many new things from it. I recomend YouTube to everyone without any doubts.