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The only way people can keep using crypto in these countries is by making use of truly-decentralized and private protocols/technologies. My guess is that people will switch to a privacy coin such as Monero or Grin, and make heavy use of DEXs. Everything will be done "under the radar", to avoid getting caught by the government. Luckily for crypto, not all of the world will turn itself against it. There will be some countries that will embrace the revolution with open hands. As long as there are crypto lobbyists fighting for the industry, we should have nothing to worry about.
Now we can see how crypto is developing around the world and each government has its own regulations regarding the use of crypto.
People who come to crypto for better privacy will use multiple platforms that will censor every transaction made,
Using a Mixing Platform might be a simple option at the moment, or yes as you say using Monero or grin will provide more privacy.
But the government also requires you to use a local Exchange to know who you are and the tax payments that will continue to be made with the local Exchange.
Now if there is a country that completely bans crypto completely, it may not see what the benefits and advantages of crypto are.
It's not just about crypto itself, but the technology behind it, this is a revolution in world transactions and the way transactions are done and recorded today will be better,
and more transparent and no one can erase it in the Blockchain.