Here's what I found so far, besides the info in this article: Opt out of interest-based ads in the App Store and Apple News - Apple Support
Opt-out of ads targeted based on your location
You may choose to opt out of receiving location-based advertising and Offers on your iOS device by opening āSettingsā, tapping āPrivacyā, tapping āLocation Servicesā, tapping āSystem Servicesā, and sliding the Location-Based Apple Ads switch to āoffā. Appleās advertising platform does not receive location-based information when you turn off Location Services on your device.
Opt-out of targeted advertising
You may choose to enable Limit Ad Tracking on iOS by opening āSettings,ā then tapping on āPrivacy,ā then āAdvertisingā, and sliding the Limit Ad Tracking switch to āonā. To enable Limit Ad Tracking on Apple TV open āSettingsā, select āGeneralā then āPrivacyā, and set āLimit Ad Trackingā to āon.ā
If you chose to enable Limit Ad Tracking, Apple's advertising platform will opt your Apple ID out of receiving ads targeted to your interests regardless of what device you are using. Apps or advertisers that do not use Apple's advertising platform are required to check the Limit Ad Tracking setting and are not permitted by Appleās guidelines to serve you targeted ads if you have Limit Ad Tracking enabled.
Whenever you want to clear the data associated with your Advertising Identifier, you can simply reset it. To reset your Advertising Identifier on iOS, open āSettingsā, tap āPrivacyā, tap āAdvertisingā, and tap āReset Advertising Identifierā. To reset your Advertising Identifier on Apple TV, open āSettingsā, then select āGeneralā, select āPrivacyā, and click āReset Advertising Identifier.ā
When you enable Limit Ad Tracking, your advertising identifier is set to null for third party apps. It is automatically reset to a new random identifier when you disable Limit Ad Tracking.
If you enable Limit Ad Tracking, you may still receive the same number of ads, but the ads may be less relevant to you.
copied from: About Advertising & Privacy - Apple Support