Since around 2006, the FIVB Technical Commission has been active in creating technical videos from all the major international events. They are quite extensive, and cover all technical and tactical areas. For some reason however, they are not at all easy to find on the FIVB website. Hard, but not impossible, at least if you have the direct URL’s.
I can highly recommend them. You can find all of the best players performing all the skills and easily find the answer to all the questions about what the best players in the world, both men and women, actually DO. It is a really interesting exercise to watch the videos with a clear mind and observe what actually happens. It will debunk many myths.