Image not set or show.

Are you using an image block? Exactly what steps are you taking to add an image to the post content?

no not ?using an image block

Are you using the classic editor? Exactly what steps are you taking to add an image to the post content?

yes use classic editor

Let’s try some basic troubleshooting.

This may be a plugin or theme conflict. Please attempt to disable all plugins, and use one of the default (Twenty*) themes. If the problem goes away, enable them one by one to identify the source of your troubles.

If you can install plugins, install “Health Check”: https://www.ads-software.com/plugins/health-check/ On the troubleshooting tab, you can click the button to disable all plugins and change the theme for you, while you’re still logged in, without affecting normal visitors to your site. You can then use its admin bar menu to turn on/off plugins and themes one at a time.

ok