@RobW Lending fiat like USD/EUR can be done online but you have to hand over your Bitcoin for the amount you want to loan (and maybe some fees orso). So not your wallet, not your coin. You cannot take a loan just by telling them you hold Bitcoin in a private wallet.
Lending from a bank like a personal loan could work but going bankrupt is not recommended in most countries. This matters less if you leave the country to build a new life somewhere else. It is better to buy Monero first instead of Bitcoin as they cannot trace where Monero has been sent to. Over time convert it to Bitcoin and store this in a private wallet.
Be careful: if that wallet is ever linked to your identity your coins might get flagged and you can forget cashing out using any exchange. You still could sell them P2P or spend them on stuff. To get them back on an exchange tumble them. Some wallets have built-in functionality for this however tumbler output is also tracked. So there are a few more steps before the exchanges stop seizing your coins