To build rich page layouts we recommend the plugin SiteOrigin Page Builder. To install Page Builder, go to PluginsAdd New and use the search field to search for Page Builder SiteOrigin. Once installed you’ll find Page Builder’s settings under SettingsSiteOrigin Page Builder. To use Page Builder in the Classic Editor, go to any page (or post) and click on the Page Builder tab which appears after the Visual and Text tabs. To use Page Builder in the Block Editor, insert a SiteOrigin Layout Block into any page or post.
For more on Page Builder, please see the Page Builder plugin home page.