https://lunanode.com for launching a BTCPay Server deployment guide on their website:
https://lunanode.com/guides/btcpay
They've simplified deploying instances for years; UNCLE ROCKSTAR (npub1j8y…vrvg) consistently uses them for conference demos.
You can also check out guide in our docs: https://docs.btcpayserver.org/Deployment/LunaNode/
Or watch video tutorial where https://launchbtcpay.lunanode.com is used
https://www.youtube.com/watch?v=-uEXoggLSDQ