That's a data point in isolation. You haven't heard the alternate explanation for those things so it's natural that you would see those as justifying your worldview - that is exactly how good propaganda works.

Look up Russian military tactics, going back 80 years. They use the attrition model of combat. They send overwhelming numbers (using their most expendable soldiers and equipment) knowing that statistically an opponent of even half the population cannot win against those tactics (this is well established military doctrine in the US as well, btw). In the West we don't consider such tactics ethical but they do in Russia.

If you don't believe me go look up Russian losses in WW2, Afghanistan, Syria, etc. They all used the same tactics.

I want you to keep this conversation in the back of your mind for a few months from now. You will be confused how Ukraine "suddenly" lost. The MSM will have an explanation for it that you will likely buy into. Think about how I know all this before it's happened.