Thanks for your answer Meaton. is there any tutorial for how to do it??

Filtering traffic for adblocking purposes is by default a content filter action and should be handled by a content filter provider such as NEFilterDataProvider and not a NEPacketTunnelProvider. Having said that, content filters on iOS are for only managed devices and cannot be deployed to the App Store.  first thanks for the reply Matt, the problem that I have is I must block some traffic content by code without connecting to any remote servers, I want to use NEFilterDataProvider but the problem is it needs a NEPacketTunnelProvider and I must run it before. I need to filter contents entire the device ( includes all apps on the cell phone such as instagram, telegram, chrome, safari and etc) so I cannot use safari extension. So the main question: is that anyway to filter traffic content entire an iOS device without an external server??

What are your trying to do and on what plaforms, i.e., iOS, macOS, or both? I am trying to create an application for iOS

when you fill privacy data on the appstore if you fill with indicate user data for Tracking purposes You must use app tracking transpaency on your code, but firebase does not need that and you must just choose No on the question . (like the following image)