Ho to show the categories filter in the left sidebar in the categories pages similar to search results page? I have enabled the left sidebar template for categories apges but it only shows the price filters.
There are a few things that must be configured in order to activate an attribute in the category layered navigation (left side category filter).
Is Anchor setting on the Display Settings tab must be set to
Yes for each category that you would like to show within the layered navigation.
Is Active must also be set to
Yes as well to ensure the category is active.
Use in Layered Navigation setting must be set to one of the filterable options (either Filterable (with results) or Filterable (no results)) for any product attribute you would like to use as a filter on the category pages.
Once you have saved your category and attribute settings, you need to
Update Magento Indexes (including attributes) and
Clear Magento Cache.
You can look at this Question it may help to you .
also you can install below extension which allow you category filter
Hope this will help you or solve your concern