I would be more than happy to assist you today.
Actually AutomatorWP is able to update and detect when a user meta field gets updated, even with filters to run actions conditionally based on the user field value, all those options are available in the WordPress integration:
https://automatorwp.com/add-ons/wordpress/
With support to meta values with arrays (multiples values in the same field) for tags:
https://automatorwp.com/docs/special-tags/user-meta-tag/
And to display or manage custom fields on your site you have free plugins like ACF or Meta Box with years of development improving the management of custom fields (for users and posts), both plugins supported by AutomatorWP too:
https://projectdmc.org/plugins/advanced-custom-fields/
https://automatorwp.com/add-ons/meta-box/
So actually you are already able to perform all of the plugin you mention in AutomatorWP for free without the unique difference that you need to install a free plugin of your choice to manage those fields (and in the future we will include more integrations with custom fields plugins)
hope it helps!