Google may be able to determine your IP address before you run Google Ads, but it depends on various factors.
Google operates a number of services, including search engines, advertising platforms, and analytics tools, that collect information from users' devices, including IP addresses. This information is used to provide personalized experiences and to improve the services offered by Google.
If you have visited any Google-owned websites or used any Google services before running Google Ads, it is possible that your IP address was collected and stored by Google. However, this information is subject to strict privacy policies and is used for internal purposes only.
It is important to note that Google's use of IP addresses is subject to privacy laws and regulations, and they take privacy and security very seriously. They have strict policies in place to protect the privacy of their users and to ensure the security of their data.