I don't fully get how reflect works, help

So, I've tried making a full physical, only physical character and learned that the character poetically dies after killing a reflective enemy due it's own long, resistance-shred-empowered, critical multiplied Internal Trauma.

So after googling a bit, I just learned about Reflect resist and managed to pump it to 70%, and I am still getting wrecked by my damage reflected back at me. I assume it's because I only have ~9% Physical resistance (Can't remember now if it's just 8, 9, or up to 12, but it's low), but I wanted to ask: Does reflected damage get reduced twice, once by Reflect resist and another by it's respective resistance?

Also, I am playing melee, what's a good way to circumvent reflective enemies? I've read around about poking and treating the target as a miniboss, but not much more.

Thanks in advance!