Has anyone used a lightning + Micro USB to USB-C cable
I have personally never seen a cable like this. i have seen Micro USB to Lightning adapters like this.

Personally I would be more careful than usual and just not force the cable if it doesn't go in as then you could be inserting the Micro USB to not damage the phone. After all if this was sold legally this must have been verified.

So in conclusion just be careful and don't force it in.

Also as mentioned by the OP be careful with the two pins.

After taking a closer look the adapter doesn’t seem certified so I recommend throwing it away.