A country cannot ban Bitcoin. All they can do is ban themselves from Bitcoin.
There really are few places today where an outright ban on bitcoin exists (i.e., illegal to accept it as a payment method). And even in these places, the ban is not working much better than the "the war on drugs" has worked in the U.S.
The wildcard is the CBDCs. Will governments fear failure of their CBDCs so much that they will go hard against bitcoin? We will find out, it appears.
At some level, bitcoin is speech. They can suppress that speech where it is easily detected, but they can't know everywhere that speech is occurring. And by banning it they are simply pushing it "underground" where it can actually become more emboldened.
But we can become (and should become) more resilient against future state oppression against bitcoin by embracing KYC-Free methods today, so that the state simply does not have visibility as to the amount of traction bitcoin has attained and little ability to gain knowledge of who the participants are. This means when buying, buy using KYC-Free P2P trading platforms ... RoboSats, Bisq, HodlHodl, LocalCoinSwap, LocalCryptos, AgoraDesk, etc. This means figuring out how to earn at least a part of your income in bitcoin. This means patronizing merchants who will accept your bitcoin as payment (and going out of your way to find them, or even persuade / orange pill them, if necessary).
Doing this now builds a community that is more resilient against a ban, should one ever come. This resilience results in the ban being ineffective, then unenforced and then eventually revoked, and that all will occur sooner if this community already exists prior to the ban.