There is no easy way for you get stronger for now, I think.

You need to farm, farm, farm. You need more (good) FLB weapons (those 30% Assault Staves are... a bit lackluster IMO) and/or Ophiel Lances. Farm, farm, farm lets you also grab a T4 Soul which will also obviously help.

For Hime, Water Pluto would probably be a huge help. Since that allows you to run Cthulhu&Pluto, which is a strong core that does -15% Atk and -50% Def. You should also run Shiva for being an easy powerhouse. That still leaves you with one slot for Asherah AW (for speed and burst damage)/Cherno (a beast if you manual)/Aphro (for longer content that needs heals and/or Cleanses).


But you certainly don't seem weak, so aside from soloing Disasters/Guardians, you should be able to handle everything just fine? So I think the most important question is: what content exactly are you struggling with?