I have an android 7.1 rooted.
I would like to know if there is any app that does anything like "f12" on chrome (network tab)
I have identified some apps that sniff the packets but they have neither the interface nor what i want to see.
If you can connect your device to a laptop acting as an access point running a proxy server, you can monitor the traffic. There are already solutions that do this for you. An example setup can be found here.