How can I change the "Write a Review" button text and link?

The “Write a Review” button on a Listing page (for my CPT) looks great (screen: https://drops.audience.ninja/04ug42bL)

But I need it to do something else:

1) Say “Contact us”
2) Open a URL defined by a specific profile field in the that User’s profile

Use case:

I am creating a directory for people to find and contact each other.

There are two places where I’d like “Contact us” buttons; on the Listing page and on the Bubble that pops up when you click a pin on the map page.

In both cases, when the user puts up their listing, there is a field for a Telegram link; I want both the above Contact Us buttons to open up (in a new window) that user’s Telegram link.

I don’t want to use the Ninja Forms because I don’t want my users to have to share email addresses; only their Telegram links.

Is this possible? How can I do it?