Are you using any type of caching plugin, like WP Rocket or similar? If so, you may have to flush the cache in order to see the changes you’ve made to your pages.
It’s also possible your web host makes use of browser caching, which essentially tells a visitor’s web browser to save a local version of the web page(s) they visit, so they’ll load faster upon subsequent visits. You can force your web browser to refresh the page, which will clear the cache and load the latest version from your web server, instead of the locally-saved version.
If you’ve published changes to your WordPress pages, but don’t see those changes when you visit your site, it’s almost a certainly a problem with caching.
Hope this helps point you in the right direction!