I would use a bitcoin only company. nostr:npub1ex7mdykw786qxvmtuls208uyxmn0hse95rfwsarvfde5yg6wy7jq6qvyt9 are a great company ran by bitcoiners.

If you want to get No KYC bitcoin then you have options like nostr:npub1yul83qxn35u607er3m7039t6rddj06qezfagfqlfw4qk5z5slrfqu8ncdu

Reach out to jack mallers. I’m sure he’ll sort you out - #[5]​ - use strike for purchasing

Article https://thebitcoinbreakout.com/the-very-basics-of-bitcoin-self-custody/

Podcast that goes with the article https://thebitcoinbreakout.com/bitcoin-self-custody/