Do you know why Russia invaded so much of Ukraine and why they did not just invade the parts in the east where they are now concentrated?
Good question. I think that Russia launched a preemptive strike not only in the Donbass, but also from the north and south - mainly in order to quickly push the Ukrainian army 100-150 km away from the border with Russia, and thus deprive the Armed Forces of Ukraine of shooting at Russian territory from stationary positions. The longest-range Ukrainian rocket Tochka-U has a maximum flight range of 120 km.
Sure... They're trying to push Ukrainians 150km from the border, which is why they're attacking Lviv with missiles. It sure is a city situated about 100km from the border, just that it's the border with Poland, about as far as you can get from Russia. That's why they sent those special forces (SOBR) to Kiev. That's why they told their soldiers to dig trenches in radioactive soil, in the exclusion zone, because they wanted Ukrainians to stop shooting at Russian territory.
Your arguments don't hold because Russian propaganda is so full of holes that you can't fix them no matter how hard you try.
You're really trying, I give you that, answering all of our questions as best as you can, trying to form whatever justification the Russian government produces into a coherent whole, but you can't make a cake out of shit, no matter how much frosting and glitter you pour on it and what fancy shape you'll create. Most people will see shit at first glance, some will need to smell it, some will get as far as tasting, but eventually they all come to a conclusion that it's not a cake.