Laszlo steered Hearts to a third-place finish in the Scottish Premier League last term but the squad has been trimmed significantly, with the likes of Christophe Berra, Robbie Neilson, Bruno Aguiar and Christos Karapidis moving on.
The Tynecastle outfit have made a sluggish start to this campaign and sit ninth in the league after nine games.
"It's not good for a manager to bring through players and then see them go on to other clubs," said Laszlo, who will have 18 months of his contract to run come January.
"The tools for success are the players and if you don't have the quality you win nothing.
"I don't like to talk negatively about the situation but, in the long-term, every manager would like to be better than ninth in the league, he would like to win things.
"This is not against anyone, this is normal. If this is not in your blood, it's not okay."
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