That's right, in Russia there is no hatred for the people of Ukraine. Russians and Ukrainians are too closely intertwined cultural and family roots to cultivate hatred for each other, it's like a form of schizophrenia. I am sad how some Ukrainians hate Russians, hatred is a self-destructive emotion.
You must be living in some alternative reality. Go into streets or open some social media and you'll see what Russians think about Ukrainians. Calling Ukrainians as nazi or banderovtsy is common stuff in Russia. It's not about Azov, not about Zelensky or someone else, but about whole nation. I don't even talk about such words like Khokhol
I have two friends who are ethnic Ukrainians (one supports the operation, the other does not support and does not want to discuss this topic) and another friend has a wife from Donbass, her parents have long been accustomed to living under the shelling of the Armed Forces of Ukraine. Another friend of mine is an ethnic Tatar. Other friends are Russian. I meet with them, we drink vodka and there is no hatred between us - this is my objective reality.
If your reality is different, you are probably a racist.
So, what's wrong with that? Official language in Ukraine is Ukrainian, so, it's normal that they don't teach Russian as main language.
But they still teach Russian as foreign language. And anti-Russian propaganda in school textbooks, what you describe is sounds more like some conspiracy theory.
Apparently people in the Donbass do not want to learn their native Russian as a foreign language.
And despite things you said, people in Ukraine continue to use Russian language without any issues. Many troops who defends Ukraine speak Russian, public faces or many politics too.
The facts of the oppression of the Russian-speaking population in Ukraine are too numerous and documented for your allegation to cancel them - even if you are completely right.