iPhone 14 Pro spam calls

Your iPhone can automatically block most spam calls, you don't need to install additional apps.

If your iPhone isn't doing this, you may need to turn this feature on. Here's how: Detect and block spam phone calls - Apple Support

Start with your cell provider. Most will have spam call blocking options. Once you have identified a service to use, make sure it is turned on at Settings > Phone > Call Blocking & Identification.