Magento 2 Layered navigation not showing

No matter what I did I couldn’t get the layered navigation showing. I have several categories with different product attributes, most of them are dropdowns and still no luck.

Steps I took:

  1. The attributes I want to be included in the layered navigation are all dropdowns.
  2. Filterable with results option is selected.
  3. Use in Search Results Layered Navigation option is marked as yes.
  4. all the categories are marked as anchors.
  5. All my categories are under the default category.
  6. Tried the luma and the blank theme.
  7. Re-indexed and flushed the cache several times.

I have various products with different attributes but still no layered navigation block is showing.

Could you please help me with this. Am I missing something or maybe I have a faulty installation.

Thank you in advance.