If Russia wanted to bomb Kyiv they would have done so by now. Russia could easily flatten Ukraine if they put their full military might behind them.
Bare in mind that the Ukranian military have been
Constrained by the west
Ukraine have not been allowed to use long range missiles
And if they do get permission civilian targets or military targets near civilian infrastructure are off limits
Russia are under no such constraints and have deliberately targeted civilians and civilian infrastructure
This entire caper has shown up how bad the Russian military capability is : has been ?
The Russians thought there invasion would have been over in weeks
Half a million plus casualties Later
Thousands of tanks
Black Sea fleet
The need to seek assistance from a 3rd world country for troops
Having to empty thete prisons of criminals to bolster there army
Etc etc