Black Armory is too hard? Hmmm i seem to remember completing it within a couple days.

I honestly don't remember any part of it being hard, I'm guessing you're at the strike. You're titan and there's builds for them if you're still going solo, I could help but I don't think my schedule works. The auto and lmg you have is good, I would suggest Telesto as your secondary or any trace rifle. There's really only two subclasses you want to be, bottom tree Sentinel with Doom Fang Pauldron or bottom tree Striker with Synthoceps. There's most likely vids covering strats to complete everything forge solo, if that still fails you'd want lfg or something.

Sadly you're not on PC and since we have no cross-play, I can't lend you hand. For me unlocking Izanami itself was much easier than previous tasks around it. In fact, as it turns out, it is my favourite forge and most played one. I only hope you'll find proper "mindset" to get through. I don't know what equipment do you have/prefer, but it may require some adjustments, as Gofannon and Volundr approach may not work here.