Tags don't fire for category pages

I’m having trouble getting a tag to fire on category pages. I’ve been able to get the tag to fire for the posts filed in that category by using a trigger that targets the pageCategory dataLayer variable. But I can’t make a working trigger for the category page (i.e. the page that lists all the posts filed under that category).

What I’m working with:
The category page doesn’t have the pageCategory variable
The category name is part of the pageTitle variable, and is part of the URL for that page (e.g. mywebsite.com/category_name)

What I’ve tried:

I made a dataLayer variable in GTM for pageTitle and tried using a trigger targeting pageTitle contains ‘Category Name’

I tried using a trigger targeting pageURL contains category_name

I tried using a trigger targeting pagePath contains category_name

I tried using a trigger targeting pageURL ends with category_name/

I tried using a trigger targeting pagePath ends with category_name/

I tried testing pageURL and pagePath by targeting mywebsite.com, which didn’t work either

Can someone help me figure out what’s going on?

https://wordpress.org/plugins/duracelltomi-google-tag-manager/