Private key – create offline paper wallet

I wanted to make it offline paper walletIdeally, without using computer Anything more than that is not verification. So I met entropy. What are the risks of trying to create a wallet using only non-computer methods? I’ve already read stories about people making wallets with coins in them. Here’s how to fix this: a certain amount of entropy When creating. some people say rolling You might get enough with the dice, but I’m not sure. Does anyone know some other way? Isn’t there some rng mechanism that I can combine with math or something else to achieve a threshold entropy for key generation?
Do I even understand all this, lol?? It’s there the human way to get computer entropy level That’s simple and straightforward? It may not always be necessary, but it is very important to have at least one wallet that you create yourself offline and only you and God know about.
Ideally, you want something that’s simple and can be personalized over time.
For example, if you can use a phone that cannot connect to the Internet. sensor data over a period of time Generate a key. It seems like it, but haha, it doesn’t work over the phone. It’s like a generator that performs rng by moving the mouse. However, a few more layers are added. Any help would be greatly appreciated.