See image below.
What does this mean?
What Data will WhatsApp collect?
WhatsApp will now collect information like your phone name and model, operating system information, mobile network, IP address, signal strength, battery level, browser information, time zone, app version, payment transactions (if you’re using WhatsApp Pay), about info and other private data are collected and shared with Facebook. Some of this information will also be shared with third-party service and opens the door to the possibility of targeted ads.
If you’re not comfortable with the new policy, the best option is to stop using the service as not agreeing to these new changes will also mean you no longer want to use WhatsApp. You can switch to any of the WhatsApp alternatives listed below.