error -1008F

Yes, you will not be able to proceed to use Internet Recovery until you disable Activation Lock. I suggest that you try using a friend's or relative's computer to access your iCloud account to disable it. Alternatively, you can pay a visit to your local Apple Store or Apple Authorized Service Provider to assist you with this ... or use the "Contact Support" link above as I mentioned previously.

You tried both the restart methods AND disabling Activation Lock? If so, then you will need to contact Apple Support directly for further assistance. You can do so by clicking on the "Contact Support" link in the upper right-hand side of this forum's web page.

This is related to the T2 security chip on your Mac. If your Mac starts up to error -1008f - Apple Support