I don't think the Yankees season is jinxed without Cole.
The team overall is good enough to contend for a playoff spot.
What you do if Cole isn't available is you try to make the trade for Cease.
I don't think you go after Snell because I wouldn't want to give up the draft capital by signing him.
If Cease isn't available, maybe consider Montgomery. But I don't really love him either. I think he's still a Tier 3 pitcher (borderline Tier 2) and I would be hesitant to commit to big money there. Jordan Montgomery is a lot closer to Patrick Sandoval than he is Logan Gilbert or somebody like that.
Then you make sure you do your best to get as much bullpen depth as possible. And not necessarily a bunch of 1 inning specialty guys. You need to find a reliever or two that can give you 2+ innings, maybe even make spot starts if necessary because...it's gonna be necessary. Remember Ramiro Mendoza? Yeah. Kinda like that.
Get Trevor Bauer for peanuts, give him a Bobby Valentine mustache and since the jerseys don’t have names on the back then maybe you can get away with it