We can add SharePoint site as Teams tabs. but some UI are hidden, such navigation bar command bar, even following image show that there is no save/publish option for event . is there way to create full SharePoint site experience in teams tab?
The SharePoint tab in Teams is only designed to show different types of content rather than the entire site experience. You can add a SharePoint page, list or document library as a tab in Microsoft Teams. More information can be found here: