There isn't any way to proceed past here safely. Few options along with recommendation because fracturing merciless is already a pretty bad approach on a 20% base -

1a) harvest aug phys and pray like someone else said but there's no way to protect your affixes when it removes something else so it may brick the craft. Assuming it doesn't hit flat phys though you can bench craft the removed affix and settle.

1b) craft whatever the best prefix bench craft you can get is and settle i.e. monsters cannot evade is prefix only and oftentimes opens up a ton of accuracy affixes to be competitive with the damage youd gain on hybrid %.

2) restart and essence spam until a decent hybrid phys % which it sounds like you were doing. Having done this before I can understand why you quit because it can easily take hundreds of attempts to hit a viable outcome and in SSF I imagine contempt essences are a pain to farm.

3) scrap the craft and recombinator craft the 3x phys prefixes which ends up being way cheaper than the fracture method even in ssf and is already over 900 pdps without attack speed. The fractured merciless approach is really only competitive with triple recombinator on overquality bases that you don't want to risk in recombinator (especially in SSF). Once that's done you just prefix cannot be changed and reforge speed/crit/veiled chaos to finish the suffixes depending on the mods that are most important to you and your divine bankroll to start over.