Help with my COC ice nova/Woc fire dmg Assassin

Hello, im clearly doing something very wrong with this build the skills and everything work fine together but im having some problems with the main parts like I cant even max my crit heres my pob

https://pastebin.com/UuPx2LGe

if someone could help me get along the right lines with this I would appreciate it greatly, im fairly new to POE

Thanks :)

Your crit is basically maxed if u use your crit flask while grinding there shouldn't be a problem