The special military operation started with an assault on Kiev, the plan being to overthrow the governmental control quickly, control Kiev. — Punshhh

The plan went wrong and what we have now is the result of repeated failures by Russia to take control of Ukriane. — Punshhh

This is just a narrative, and it isn't actually supported by the facts as we know them, nor by military logic. Those facts have been repeated ad nauseam in this thread.

Not even the most lopsided interpretation of those facts and numbers will produce anything that comes close to supporting your view.

So why was a military Column marching on Kiev at the beginning of the invasion?

And if the plan was to bed down in bunkers in the Dombass, why did a column march on Kiev?

The Russian casualties are large, even if the numbers are disputed.