At the same time, Ukraine’s allies admit that they are not doing enough to ensure that the Ukrainian Armed Forces have the opportunity to push the invaders out of their territory. Therefore, it is no coincidence that 11 states have already recognized Ukraine’s right to strike Russian military targets with their weapons. An opinion is also emerging that if Russia manages to achieve significant success on the Ukrainian front, then the army of European countries will be forced to openly help Ukraine defend itself from Russian aggression. Therefore, indeed, Russia’s continuation of the war with Ukraine increases the likelihood of direct military clashes with NATO.
If you haven't spotted already, Russia has already achieved significant success, by capturing numerous cities and almost completely destroying AFU. Russia vs NATO war means WW3 and eventually the nuclear apocalypse. Russia as a global nuclear superpower simply can't lose. Btw, not all NATO members are willing to fight Russia, for example Turkey announced they are not going to take part in any NATO offensive in Ukraine. Putin’s Russia still has a choice: continue military aggression against Ukraine and increase the likelihood of war with NATO, or gradually wind down military operations, admitting that the initial plans to seize Ukraine have completely failed. So far, we see that Russia is frivolously moving towards its own catastrophe with disintegration into several parts.
I'm not sure what Ukrainian trolls see, but I see that Russia is winning this war and AFU on the brink of complete collapse. 
As for Russia’s possible war against NATO, everything depends on the aggressive appetites of Putin’s Russia. After all, Russia is currently attacking, not NATO countries. Russia, as a nuclear superpower, cannot lose a war? But the USA and France also have their own nuclear arsenals and then they also cannot lose?
NATO has not yet lost a single soldier in this confrontation. At the same time, Russia’s losses in manpower and military equipment are simply colossal. A few more years of such a war and NATO soldiers will be able to simply march and enter Moscow without any resistance.