If you are searching for an excellent non-corporate media perspective on what led to the Russia-Ukraine conflict, I highly recommend Oliver Stone’s 2016 documentary Ukraine on Fire. You are simply not going to find this kind of historical information on the mainstream media outlets. It doesn’t fit inside the Overton Window.
Curiously, Stone’s documentary sat on YouTube for over four years without any problems or incident. However, it was just recently removed for violating YouTube’s Terms of Service against “violence or graphic content.”
Things that make you go hmmmmm.