The Euromaidan protests came a year after Putin was spooked by the Bolotnaya Square protests. That's what worries him. Putin already experienced a revolution, as a KGB officer in Germany, and he doesn't want to end up like Gaddafi.

https://www.themoscowtimes.com/2021/12/09/10-years-since-bolotnaya-the-biggest-protests-of-the-putin-era-a75739