Can I "Wipe data/Factory reset" a phone that doesn't even boot via USB?
I've seen such an issue before, but it was a samsung device.
I do not have a cookbook solution for you, just some points to check:

Is the powerbutton still working? Did you have issues with buttons before? On the samsung we had to create a special plug from a cable and a 3k resistor. This brings the samsung phones directly to download-mode where you can flash and or reboot.

Is your battery still ok? Can you replace it (quickly exchange with a friend) or is this not possible with your phone type?

Is your charger ok? And the cable? Try another one and leave it on for a while, a dead battery needs a bit of time and very slow charge, before it can go back to normal charging.

Good luck