How to Move BTC to Paper Wallet?

I want to get away from using third-party wallets, even hardware, and truly self-custody in the simplest way possible. I'm not a dev nor do I have experience running a node. I understand that a paper wallet is self-custodying my own public and private keys, but I'm confused how I get there.

For example:
Say I buy BTC on Coinbase.
At this point, it's in Coinbase's custody, so I obviously need to withdraw it [somewhere?] to self-custody it.
Where would I send my BTC to?