Fireball firing backwards whenever I point the cursor at the sky

Help and Feedback Scripting Support
#1

Basically when I point my cursor at the sky the fireball just goes in the opposite direction of where it’s supposed to go. It just goes the reverse way instead of the correct way.

local mouse = GetMouse:InvokeClient(Player)
	if mouse and mouse.Position then

		local Fireball = Assets.Fireball:Clone()
		
		local lookAt = CFrame.lookAt(Character.PrimaryPart.Position, mouse.Position)
		Fireball.CFrame = lookAt

		local Params = RaycastParams.new()
		Params.FilterDescendantsInstances = {Character, workspace.VFX}
		Params.FilterType = Enum.RaycastFilterType.Blacklist
		local cast = workspace:Raycast(mouse.Position, lookAt.LookVector*1000, Params)
		if cast and cast.Instance and cast.Position then
			lookAt = CFrame.lookAt(Fireball.Position, cast.Position)
			print("???")
		end
		
		Fireball.CFrame = lookAt
		
		local VectorForce = Instance.new("VectorForce")
		VectorForce.Enabled = true
		VectorForce.Force = gravityVector * Fireball.AssemblyMass
		VectorForce.Attachment0 = Fireball.PrimaryAtt
		VectorForce.Parent = Fireball
		Fireball.Parent = workspace.VFX

	end