What am I doing wrong with my build?

https://pobb.in/PxR7ZNsfFXpb

What gems should I be running? / talents should i reroll to.
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I am having a hard time keeping mana without having to use 2 mana pots as well as being very squishy.

Supposed to be a cyclone shockwave slayer, but I know I dont have a staff that is strong enough yet to put shockwave on.,

https://pobb.in/bIESx2dD6i-h

updated, I have max resistants now 40% chaos, and I updated my tree. Now I need to figure out my gems I need to use, like determ, pride ,anger or what ever, No one has said anything yet that would be good to use.