Clinging onto his Mercedes seat for 2022 is going to be a "damn tight" battle for Valtteri Bottas.
"I found his reaction to be not at all sympathetic and not at all self-critical," the German told Sky Deutschland.
Schumacher thinks the reason for Bottas' reaction is because Williams' Russell is shaping up to replace him in 2022.
"With Valtteri, I think this reaction is because he knows it's going to be damn tight for him. He's currently under a lot of pressure," he said.
Schumacher thinks Bottas' current struggles date back to late last season, when Russell replaced the ill Lewis Hamilton and immediately outperformed Bottas.
"That broke him up a bit," Schumacher said. "At that time the pendulum swung in a certain direction."
Mercedes team boss Toto Wolff admits he sat down with both Russell - a team development driver - and Bottas to discuss the situation after Imola.
"I think I want most of it to stay confidential because I had discussions with both of the drivers," he said.
"There is no confusion on any side and there are no rules for any of the drivers. It's just us giving feedback," added Wolff.