Does Certbot offer self-signed SSL certificates only?

Just wondering if they offer anything other than self signed SSL certificates.

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When I try to connect via HTTPS i get this error on chrome:

"This site can’t be reached refused to connect. Try: Checking the connection Checking the proxy and the firewall ERR_CONNECTION_REFUSED"

When I run the command “sudo certbot certificates” it looks like there is already a 90 day certificate that has been generated as of four days ago:

Certbot offers certificates signed by Let’s Encrypt, a widely trusted CA, or by the Let’s Encrypt staging environment’s non-trusted test CA.

(Let’s Encrypt certificates chain ultimately to IdenTrust’s DST Root CA X3, or to Let’s Encrypt’s newer ISRG Root X1.)

Certbot can also be used with any other CA implementing ACME, but there aren’t really any yet.

I don’t know of any convenient way for Certbot to produce self-signed certificates.

Why do you ask?