A lot of countries banned crypto and bitcoin. They are afraid that they lose the taxes that every person in that particular country should donate. Legalization and public awareness is both important. But first they should be aware what bitcoin is, how helpful bitcoin is and what are the importance of bitcoin. After that if people agreed with that public informing/awareness then the government will legalize BTC. Not all countries implementing it because the people who lives there didn't agree or maybe it's just their government doesn't want it to enter their country because it might be a cause of crimes.