Yes, it's all about NATO
I see you are a keen admirer of Joseph Goebbels. Unfortunately, contrary to what your idol claimed, a lie repeated a thousand times does
not become the truth.
You simply don't listen to your bald, KGBist hero. It was never about NATO but about "Russia's return to its historical space and its place in the world", a new era of Russkiy Mir; it was about overcoming "the tragedy of 1991, that terrible catastrophe of our history, that unnatural aberration" and about Ukraine that was going to be "re-structured, re-established and returned to its natural condition as part of the Russian world" blah blah blah yadda yadda yadda.
It is all about Russian paranoia, grievance and aggression; a bare minimum of observation and critical thinking skills would be enough to see it.