Unless you found a way to break HTTPS, that won't do. Android uses certificate pinning, and any MITM attempt (such as running through a proxy) won't even send the requests through.
The only ways your certificate works are:
* Your self signed certificates are marked as trusted in the app manifest (which, since it isn't your app, you have to rebuild an APK to modify the network_security_config)
* There's a leftover "accept everything" in the manifest, and that can only work with debug builds.
* You ran it through apktool/equivalent to insert a permissive network_security_config (which only has this ability since 2022, but other scripts have existed before).
Running it through Frida for that purpose is needlessly overkill.
Please know your shit.
/system/etc/security/cacerts
yeah it can. you just mount it as tmpfs.