Default In desperate need of help

So basically, was in TWRP on my LG G2 (verizon), wiped my entire internal storage and now there is absolutely NOTHING (no OS).
I frantically began researching for possible solutions, and came across the adb sideload feature, which as of now is my only hope of saving my phone since download mode won't work (erased entire OS). The only problem is, how do I use this sideload feature if my phone can't connect via USB Debug? What can I do to save my phone?

Am I wrong in that this sideload feature is my only hope?