He could talk about what he does know and understand?
This is his interview the day before he got sacked. How could he possibly expect his players to play for him after that?
https://www.bbc.co.uk/sport/football/67246397
In the last few years most of these wannabe managers have failed.
In the league right now we've got Hearts, Aberdeen and Motherwell on the verge of changing managers again (or at least there's grumblings about it from their fan bases).
The one thing they have in common is that they managers with zero experience.