Possible leads on rooting OPPO A72

I have spent a couple days trying to root this phone using an exploit or similar now. What I've discovered so far is:

- Recovery, EDL, Fastbootd (without functions over USB) are all available
- Engineer Mode is available too, but not accessible without credentials
- Similar phones (Realme, OnePlus, other OPPOs) have supposedly been rooted using an "In-Depth Testing" APK

I'm not sure if using the APK on my own phone is a good idea, but I have tried reverse engineering it and have gotten as...

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