If Russia is so capable, it would have captured Kiev within 6 weeks of its invasion back in 24 February 2022, which is after all, the original plan of Bloodymir Putin. This is also why the invasion had begun North-East from Kharkiv and shortly thereafter to Kiev, which unfortunately lead to their Russian's convoy of vehicles being stalled in the melted ice + mu.d, due to poor quality Chink tires. Even a nerd can envisage this.
Another point I would like to highlight to you is that if the Russian troops are that capable, Kremlin wouldn't even need to engage the services of the Wagner Group to help them in this war in Eastern Ukraine. Even a fool will acknowledge this. Prove your point by telling us in this forum what have you got to say?