How to make an image url publicly accessible without credentials?

How do I make this link publicly available without the need for credentials?
I have seen this post but I don’t get how it helps.
Thank you

Create a public link for that file: File Sharing — Nextcloud latest User Manual latest documentation

Thank you.
I’ll give it a go.
I am trying to share my photos with this site and they are not happy with most of the links I generated.