If they are not going to restrict Internet then simply use VPN service and keep, trade and move your Bitcoins or crypto via abroad based wallets & exchanges.
If you nee to get USD simply exchange your BTC to USD via e.g. Skrill.
Good VPN service is a powerful way to get access to services, restricted locally.
For example, a lot of countries block gambling websites locally but .... millions of people bet and gamble, using VPNs.