how to create sitemap.xml in codeigniter 4?

quickest way go to : https://www.xml-sitemaps.com/ type in your url to your web. Download sitemap.xml from link; stick it in public , go to google search console and submit simples

CMS CI4 A CMS system, runs out of the box written on top of CI4

Arch Book  CodeIgniter4 on Apache(pages 92-114) 

CI4-CMS Github