I did not make a claim, you did. Can you provide any evidence of "everyone knowing" that ratio of losses or were you just making it up?
The video you provided seems from a Kremlin propagandist, but still does not say what you say. The second one is from an unemployed ex-military analyst that was ejected from his role in the Pentagon - so not someone who would have any access to real information, but certainly someone in need of cash.
Is that it? Is that what you got?
You see, that is the problem when you listen too much to Trump. You start thinking that it is for others to prove you wrong, and not for you to make your case.
Let's have a sense check of your numbers: How many Ruzzian soldiers have died according to your
imagination "sources"?
As everybody can see, you wouldn't believe the proof if it stepped up and scratched you in the eyeball.
You can do research... or maybe you can't. Hop a train to Ukraine and count the graves of the dead troops. You are much closer. You can do it easier. Just be careful to not be drafted and sent to the front lines.