Hi, @Dadalyan, Nara ,
I got what you mean about the "more details" link. For SharePoint Online modern web part, per my knowledge, if there is no option for you to edit the settings in the web part, there is no way for you to customize it. And for the SharePoint forms web part, this is exactly the case. We cannot make the web part to display the "More Details" link out of the box. You can post you idea in UserVoice, then the Microsoft team will see your response and consider about this feature.