#8: Do you show only relevant filters for each category?
Different categories of product require different filters. Make sure that you don't show irrelevant filters on different categories.
If you sell different products, then the product attributes will vary greatly between product categories. It is unlikely that one filter will work for all categories. So you have to double-check all of them and consider which filters matter the most about products in each category.

Let's look at the example below where Gymshark show different filters for in different product categories

Filters for socks:
You can filter by size and color which is relevant for that type of products.
Filters for bags:
You can filter only by color, because size doesn't relevant for these products
Made on