=> Download and unzip the respective extension zip and create Ecomfit(vendor) and Tracking(module) name folder inside your magento/app/code/ directory and then move all module's files into magento root directory Magento2/app/code/Ecomfit/Tracking/ folder.

Install with Composer as you go

Specify the version of the module you need, and go.

composer require locpx/magento2_tracking_module

Run following command via terminal from magento root directory

 $ php bin/magento setup:upgrade
 $ php bin/magento setup:di:compile
 $ php bin/magento setup:static-content:deploy

=> Flush the cache and reindex all.

now module is properly installed