In the Additional CSS for your theme, add the CSS code for ‘list-style-type’ for unordered list. Something like:
ul {
list-style-type: circle;
}
Note that this will affect all unordered lists on your site.
Take a look at this page for other options: https://www.w3schools.com/css/css_list.asp
Added
Note that your theme may be using additional CSS that could override the above setting. So you can try this to override the theme’s overrides:
ul {
list-style-type: circle !important;
}
You can also inspect the generated page code for a specific ID or CSS Class used.
Another option is to make a Child Theme, then look at the theme’s styles.css file for the UL’s CSS code, and copy that into your Child Theme’s CSS file, then modify that. This works because a Child Theme’s CSS is loaded after the ‘parent’ theme’s CSS file, so the Child Theme’s CSS will override theme settings.
Note that you don’t want to modify the theme’s CSS file – a theme update will overwrite your changes.