I'll assume that you're referring to fixing the view named "first view set up".
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Let me explain that, step-by-step:
1. In the "Content Selection" the post type "test directories" is selected to show the post results.
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2. In the "Query Filter" section and the "Search and Pagination" section, no filter for the categories is set.
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Here are steps for that:
a). Please click the "New filter" button in the "Search and Pagination" section.
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b). From the next screen, select the taxonomy that you'd like to use for this search filter.
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c). The next screen will allow you to select the type of search field, the default option label, and order settings for the field options.
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d). When you'll click the "Insert shortcode" button, the code for the search field will be included in the "Search and Pagination" and the relevant query filter will also be added into the "Query Filter" section.
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3. The next step is to configure the "Loop Editor" section.
a). To start, click the "Loop Wizard" button.
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b). As you'll be using the Divi editor for the designing the output of the loop items, select the "Unformatted" option for the display.
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c). From the next screen, add any field like post title, make sure the use of the content template is enabled, and click "Finish".
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As a result, the necessary code for the loop editor will be included and the content template will be attached with the view.
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This content template will be used to show each result/post in the view's list.
4. The last part is to design the loop item content template using the Divi builder.
a). As you'd like to use the Divi builder for this template, click the link to stop using the block editor.
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b). Next, you'll see that the template will be using the classic editor, but, there will be a button to use the Divi builder too.
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c). When you've selected the Divi builder, you'll see the option to edit the template using the Divi builder.
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When you'll click the button "Edit using the Divi builder", a new window will open and you can edit the template using the Divi builder just like you edit your content in pages.
At this point, I'll recommend understanding how different sections in the view editor works and try making a couple of test views on your own.
Once the use of view's editor screen is clear, you can move to the part of displaying the views on the desired page. This is already explained in step 4 of my first reply.
( ref: https://toolset.com/forums/topic/i-want-to-know-how-to-create-a-search-box/#post-2262523 )