Rosa Berserking blade - looking for help with my build

My first league. Trying to follow ladder guys.
My build: 3Nibz0VQEfGDDgAAAAAAeQ==

When fully stacked up I have 2,1 bilion DPS on training dummy. I tried t8, it is Ok to farm now but much slower than T7 that I blast. I have no idea what to upgrade next. I just bought berserking blade - rampage, but on its own it is not damage increase. Maybe it will be better with berserking blade - sweep. I dont know. Also my crit chance and crit multi is prety low, I do not know where to start boosting it, probably everywhere on my gear where I have free slot.

I will be glad for any advice, as I said my first league and I am happy that build is now somow working after swap to berserking blade.

Budget right now 500-1000 FE.