Pages not being indexed in google search

Helo dears, hope you’re doing well, please i have this issue with my pages of my website not being able to be index in google, after i used this link it didn’t appears all the links of my website but only showed 2 links ?? https://devinsights.site/page-sitemap.xml

Can you tell me why the pages not recognized in google search?? because now i link it to google search and after that i changed the links to be a link and the name of the post/page, isn’t that the issue?

as you can see in the screenshot it only showed 3 pages out of a lot of pages exist in the website:

The page I need help with: https://devinsights.site/page-sitemap.xml

The page I need help with: [log in to see the link]