I would love to post this on Nostr but I am still learning how to do all of that securely.

I don't like to put my private key into online services so I am trying to figure out how to post on there via Snort. I am running Snort on my Umbrel but for some reason, I can't connect to Umbrel with a secure connection so Snort will not let me login with my nsec.

ELI5. How would I go about posting this on Nostr with the right combination of security and ease of use for long form content?