How do you deal with a killer who just slugs all 4 survivors? Not a rage post, need advice

In a stroke of extremely bad luck I've been on SIX games tonight where the killer just slugged all four survivors and BM'd waiting for everyone to bleed out or disconnect.

In a solo-q scenario, what do you even do? I've started running Unbreakable every game but that just ends up making the match a tedious 20 minute long back and forth and in the end we just get 4k'd anyway. (I am new and very bad so even if I get up idk who to go for next when the killer is just camping the other survs)