Tens of thousands, hundreds of thousands, millions even!!!
How about this alternative: most of what you read is bullshit.
Hint, Google “Ukraine leaked documents Newsweek,” and look at what our own defense department thinks is real. Very different from what you think is real.
Newsweek reports it was bad.
“Russia can barely support its forces and is in a mad rush to replenish its troops on the battlefield. U.S. intelligence concludes that as many as 43,000 Russian soldiers have been killed and 180,000 have been wounded since February 2022. That’s more than the entire size of the initial invading force. The war has also been costly for Ukraine; its losses are as high as 131,000 killed and wounded.”