Interestingly, the disdain for democracy in both Russia and China is strongly motivated by "we've already tried giving people freedom and it didn't work".
China also learned a lot from the brutal liberalization in the breakup of USSR. Their own shift to markets was explicitly designed to avoid such a catastrophe. The book "How China Escaped Shock Therapy" on the topic is interesting.
Warlordism has nothing to do with democracy. Each warlord was just their own little dictator fighting for expansion. The people were just cannon fodder.
In fact the Chinese did manage to create a thriving democracy after the warlord era, which is still here today. But it's based in Taipei and the mainland Chinese leaders want to take it down because it undermines their narrative.
And the Russians having the easiest beginnings of democracy for a few months claiming they "tried it and it didn't work"? Never heard them say it but if they did it's just dogma.