Founder of OptimizeSmart.com
In that case, your existing or new tracking code may not work. So how can you fix the problem?
Through the "Google Analytics Troubleshooting Guide" you can determine what has gone wrong and what can be done to fix the tracking issues.
2) Learn to setup your Google Cloud Platform account.
3) Learn to connect Google Analytics 4 with BigQuery.
Understanding exactly which marketing channels and keywords are driving phone calls is invaluable.
Attributing phone calls to the correct marketing channels/keywords means you can increase the budget of the marketing channels/keywords which drive phone calls and reduce the budget of those that do not.
The phone call tracking in Google Analytics let you do that.
2) Learn to send Google ads data to Google Sheets.
Once you have sent Facebook and Google Ads to Google Sheets you can manipulate the data there for reporting purpose or send the data to Google Data Studio.
Regex are very useful while setting up Google Analytics tracking.