Changing the call-to-action message of the ad
Changing the message of call to action can help you to get your ad performed as per your expectation. When you’re clear about the action you want people to take on your site, visitors are much more likely to actually take that action and bring you the business you’re looking for.
The more specific your call-to-action (that is, the closer it matches your keywords and landing page), the better your chances of a conversion. By choosing the right action phrase, you’ll avoid having to pay for clicks that are less likely to result in business for you.
A strong, clear call-to-action tells customers what they can expect and nudges them toward your desired action. This exercise it the part of your ads and landing page optimization.
Lear more here: https://support.google.com/google-ads/answer/6238826