From my limited knowledge, it is possible to have full (or most) control of your money.
With multiple counties going through 'banks not letting them touch their money' it's a finical security issue (when or if this happens to you).
Please correct me as I want to learn more.
Life insurance: this acts like your own back, you can take loans out of your own money (which gov/banks can't touch), while it earns interest. You then need to pay yourself back once you take some.
Not sure how this could work if you can't gain access to your bank account (where you possibly send it to use it?)
Crypto currencies: you are able to move your funds into a cold wallet. This means you have the only keys to access this money where Hackers cant reach. I've heard breifly that dogecoin can be spent in a small amount of stores.
When you sell it you get your optional currency (£, $ etc) or trade it
What other places can you put your money to protect it?