Bullshit stats. NATO is losing this proxi-war. They can't hide it, so they inflate Russian loses to save face. Every time the media reports on Ukrainian retreat they tell about Russian loses, which they have no way of knowing.
Both sides are downplaying their own losses and inflating the losses of their enemy.
The conflict is an absolute modern hellscape and there are a shit ton of people on both sides getting killed and wounded. 1 month of this war probably has more casualties than the US in a decade of GWOT.
Entire battle groups are getting decimated and becoming combat ineffective. That hasn't happened on a scale like this in a long time.
But yes, Russia is winning (at a high cost) and Ukraine is losing (at a high cost).