If your nation simply have yet officially accept Bitcoin and cryptocurrency, you can use it but be aware that you will not be protected by laws in your nation.
I'd reconsider this statement. If you're in a country where bitcoin is a de jure asset (eg in places like the EU where an asset has to be expressly made illegal to own) then you do have legal rights to possess the asset, trade it and receive the same contractual/legal protections as long as you confirm yourself to their requirements (for example not doing a single transaction of more than €15000 cash without KYC).
You can trade and won't be put into jail because you have trades with Bitcoin or cryptocurrency.
Only when you have crypto trades and you were scammed by trade partners or your trade partners use dark money for money laundering, you will not be protected by laws. You will lose your money and can not find any help from police, banks or government.