Search box and filtering not working

I have 2 product tables and the search/filtering is not working on both. I have ‘search keyword’, ‘category’ and ‘tags’ enabled in my filtering. For Category and Tags, whatever I select in these, all products show, even the products/categories that are set to be excluded from the table show, it just doesn’t filer anything. And then for the Search Keyword box, this only searches the title. So for example, I sell greeting cards and if I search ‘Birthday’ it only shows products that have ‘Birthday in the name’. It doesn’t search the tags. What can I do please?