Exhaust manifold cracked n White smoke comes out

White smoke normally means you are burning coolant. First thing first you need to get that diagnosed. If you have a bad head gasket and cracked manifold it may be time to evaluate the entire car. It might not be worth the repair. If you don't work on your own car then use this link to find a good shop near you. https://repairpal.com/repair-shops Alex

White smoke coming out of tail pipe as well?

#1 park the vehicle, driving it will cause further damage.#2 tow it to your local garage and have the engine evaluated.