We save player data such as an ID allocated by a third party service, and the player's choice of avatar. When I look at the player's record in the Playfab Game Manager, I can see this information in the Player Data (Title) tab. The players section of the Game Manager has a search feature, but the documentation is seriously lacking, with a handful of examples and no explanations. I've found posts requesting help with searching (and also commenting on the documentation), and the most common response being "The Game Manager wasn't designed for this, use a data warehouse instead". Most of the time I just want to make some quick, simple ad hoc searches and I don't want to bother with the overhead of setting up a data warehouse.
To give examples of a couple of queries I would like to run: how many players have selected avatars? (E.g any data is recorded against the avatar key in their Player Data). I would also like to be able to search for a specific player with the ID we've recorded in their Player Data.