Decision making question

Legitimate question. When my laners are dieing to an early game pressure jungler/ekko (they both started roaming, my mid laner got first and second blooded iirc), I tend to farm as fast as I can because to me- that's an impossible lane to gank. A level five shyvanna and five ekko against a level eight gangplank. So I did, he died I barely made it out. Meanwhile bot is basically camped by the lee sin/ekko and it repeatedly gets 4-manned. They start complaining that I'm not coming, but they are 0/2 or 0/3 at this point and I don't really want to go feed gold. Should I just keep power farming (I play hyper carries) or should I go attempt to help a situation that, to me, seems lost beyond control? I really need to know. My teammates always get frustrated with this choice.

tl:dr- when your lanes die a lot as jungler, should you try to gank? You are a hypercarry with good camp clear speed.

Edit: This is all over the place. Lemme clarify. Mid lane got dunked twice to enemy mid and enemy jungle, putting them ahead of both of us respectively. The mid then roamed and nuked bot a few times, enemy jung as well. I had barely finished my first clear. Should I have attempted to gank at this point with all my lanes having been destroyed?