Mage/Dark Wizard Looking for a better lvl 100 build.

Hey everyone, i was hoping someone could suggest me a better build than what i already have.
Its a fairly simple build, full morhp with cascade, i remember everyone suggested that to me so i went for it, but i don't find it incredible.
Its very hard to lootrun with it, not enough damage and mana regen, but mostly i die very easily.

Probably im just skill issuing but i was hoping someone could suggest me a tankier build with better damage, and a better ability tree, (cuz i have absolutly no idea what i should make it, currently using riftwalker) and also how to actually play said tree cuz again, i have no idea honestly.