Crimea was not “liberated” in 2014. It was stolen by force. The Western world stood by and let that happen. Now we’re suffering the consequences.
Every poll anybody has ever taken in Crimea has shown the people there want no part of “ukraine”. For that matter, it doesn’t really look like anybody does. Population has gone from 40M two years ago to around 25M now, i.e. everybody who had any sort of a way out is now gone.