how to share photos with people that do not have an iCloud account

The chance that someone will stumble upon your public website is highly unlikely given the obscure nature of the site name.

The other options are SmugMug, Dropbox, Flickr, PostImage, etc. I wouldn't use Google Photos as they are known mine users info from everything they host (just a personal preference).

If you had set up iCloud photo library https://support.apple.com/en-in/HT204264

And its preferences https://support.apple.com/en-in/guide/photos/pht5156cc968/4.0/mac/10.14

Select photos from photo library folder https://support.apple.com/en-in/guide/photos/pht40b0be510/4.0/mac/10.14

Take cursor on top menu bar file > share with mails , the mail compose window opens for an IMAP account ( the account should be already added ) https://support.apple.com/en-in/guide/mail/mail35803/mac , the photos will be added , fill up the mail address and click on sent button , even the recipient is not using an iCloud account the mail will be delivered https://support.apple.com/en-in/HT204093

You had already a shared album in photo application , tap the shared album select desired photos , there is an icon in top right side , share with mail select the desired mail address and don't use Cc or Bcc fields to fill more mail address and click on sent .

The second way is use https://support.apple.com/en-in/guide/photos/pht6e593112/4.0/mac/10.14

The photo short cut : Export photos

Shift-Command-E

create a folder and click on export , open finder > click on download > iCloud photos you can see folder with photos inside , but before sharing the folder , change read and write permissions https://support.apple.com/en-in/guide/mac-help/mchlp1203/mac

You can select the desired options and sent the mail .

Have you looked at Google Photos?

https://www.google.com/photos/about/