And for the record, this is where you showed yourself to be wholly a Kremlin agent. There is one source on the entire planet that puts Russian losses that low: Official Kremlin press releases. Every other source, including every single other Russian source puts it much higher.
And the fact that you just assume it's correct... If they've only lost 4,000 people why did they abandon the entire north of the country and any hope of total victory in April?
If they've only lost 4k, for what are they trying to recruit "300k" now?