Google Ads advertising campaign Sale of Yamaha motors

Setting up an advertising campaign in Google Adwors for a site selling Yamaha motors.

WAS:
Number of visits----3959
CPC--------------------3$.
Lead Price-------------$141
Number of leads----------------84
Conversion--------------------------------2.1%

BECOMING:
Number of visits----5677
CPC--------------------0.57$
Lead Price-------------$19
Number of leads----------------170
Conversion--------------------------------3%

(The customer asked not to publish the link of the project).