MY RSS feed doesnt show half my site's posts

Is “news” a regular post, a page, or a custom post type?

its a custom post type

Then you’ll need to add the CPT to your feed.

see this for one solution

https://www.wpbeginner.com/wptutorials/how-to-add-custom-post-types-to-your-main-wordpress-rss-feed/

and/or this

https://codex.www.ads-software.com/Customizing_Feeds

excellent sterndata, thanks! Ill try it, but how about RSS for pages? neither posts for custom types or for pages are showing up

if you’re going to add your cpt as a post type, you can also add the post type ‘page’ ??

Though, typically, pages are relatively static and not part of a feed.

yes, indeed

many thanks again