How do I get %phys on this craft?

basically - you don't. %phys should be either the first mod or the second mod if you want something else fractured. Otherwise you'll very likely require hundreds of whittles, its the lowest weighted mod in the game.

Ssf btw

Oof this one hurts

Guess desecrate with reroll and then OoL until it hits? Tough to farm the currency though

You won't.

Either find a blue base with %phys already on it or start with a white item lvl 82 base (needed for t1 phys%) then perf transmute once and cycle perf augments and anuls until you hit it. Alternatively fracture another low weighted mod like t1 crit chance on an item, anul to fracture +1 mod and chaos orb until t1 phys. Taked thousands of chaos orbs though on average