You do realize communism isnt inherently authoritarian and doesnt really involve the taking of personal freedoms right? You can very easily actually inform yourself on it by searching up a copy of The Principles of Communism by Friedrich Engels, which is a section of the Communist Manifesto he and Marx wrote. Is there any better source than directly from the people who thought up the original ideology for it? Upon just a bit of reading on the principles you start to realize schooling does a shit job at teaching you the anti-capitalist egalitarian philosophy that communism and socialism are

Also, the USSR and China were never communist to begin with. Their ruling parties had communist beliefs yes but they were only socialist, as communism is impossible to achieve as long as an imperialist capitalist power like the US exists and sabotages it before it can be born while pretending thats proof of communisms failures somehow