How did robeespierre's methods turn against him?

Robespierre's methods turned against him due to his increasing radicalism and use of extreme violence during the Reign of Terror. This led to opposition within the National Convention and among his former allies, who feared his unchecked power. Robespierre's downfall came during the Thermidorian Reaction, when he was arrested and executed along with his key supporters on July 28, 1794.