If you didn't you never would have taken the time to write the note. Nostr & how you get your sats are two different things one does not matter against or with the other. The other way to get sats or purchase bitcoin is with cash. Theres the https://bisq.network/ which is a site to search for traders around where you live. You give them cash they give you bits right on the spot. Skeptical sure meeting a stranger online but the traders who give the sats for your cash are mostly rich people.

The likelyhood of a trader scamming you is minimal because then their rep on bisq would be ruined & they would be an outcast.