BodyForce applied to object in the wrong direction?

Hi, I'm trying to make a script that throws a ball in the direction the player clicked. What I have so far is

Local Script:

local player = game.Players.LocalPlayer
local mouse = player:GetMouse()
local mousepos = mouse.Hit.p
local handle = script.Parent
local tool = handle.Parent

local RS = game:GetService("ReplicatedStorage")
local ThrowBallEvent = RS:WaitForChild("ThrowBall")

tool.Activated:connect(function()
	ThrowBallEvent:FireServer(tool, mousepos)	
	tool:Destroy()	
end)

Server Script:

local RS = game:GetService("ReplicatedStorage")
local ThrowBallEvent = RS:WaitForChild("ThrowBall")

local function ThrowBall(player, tool, mousepos)
		
	local ball = tool:clone()
	ball.Parent = game.Workspace
	
	local rootpart = player.Character:FindFirstChild("HumanoidRootPart")
	local humanoid = player.Character:FindFirstChild("Humanoid")
	local head = player.Character:FindFirstChild("Head")
		
	local newhandle = ball:WaitForChild("Handle")
	newhandle.Position = head.Position + head.CFrame.lookVector * 4
	newhandle.CanCollide = true
		
	local force = Instance.new("BodyForce", newhandle)
	local targetpos = mousepos
	local initialpos = rootpart.Position
	local direction = (mousepos - initialpos).unit
	force.Force = direction * 300
		
end

ThrowBallEvent.OnServerEvent:Connect(ThrowBall)

The ball is thrown, but the direction of the force is completely arbitrary. Sometimes the ball will take off to the left, sometimes it'll go behind me, and sometimes it'll go straight. Any idea on why it's acting like this and not just going where I click?

local initialpos = rootpart.Position

^ Here you basically told it to go in the direction of ur rootparts position

mousepos - initialpos).unit

^ Basically these Two lines make the whatever go from ur mouse pos subtracted by ur HumanoidRootParts Position instead u wanna use CFrame then convert that to Vector like so

local initialpos = rootpart.CFrame.LookVector --LOOKVECTOR = INFRONT OF YOU

Hope this helps I'm not too good with Vector3s and position so I apologize if any of it was wrong as you were using Position for shooting something so it's confusing me also there r multiple Vectors LookVector, UpVector and RightVector