When Prigozhin promised to restore justice to the Russian military, he also promised to pay the army. A large part of the Russian army, conscripts, prisoners, those dump in front of the blocking forces, are owed back pay or not getting paid. That is a strong incentive to defect.
“When the boots wore out they’d be ready to listen” - Yevgraf Zhivago
A Russian army commander has been accused of stealing engines from Putin's prized T-90 tanks, report says
The Russians would probably have taken Kyiv in the first month of the war if it wasn't for their $#itty logistics due to corruption.