Germany have finished bottom of their Nations League group and relegated to League B.
Briegel reckons Guardiola's three-year stint at Bayern Munich and his tactics have had a negative impact on German football.
The former Besiktas coach told La Repubblica: “A very simple principle has escaped our mind, that in football the result is more important than the control of the game.
"Since Guardiola arrived at Bayern Munich, something has changed.
“We had the illusion that 75 per cent of possession was needed to win.
“But having control of the ball is not enough to get a result, not always at least.
"Recent history, and also with the World champions France, has shown that you can also win by leaving the ball to the opponents and having less than 50% of possession."