What am I doing wrong? - Gun Animations

[fluid pebble]

I am completelty new to roblox studio and are helping a friend handle a game, but I don't know what I've done wrong with this script.

I used Rustysillybands' tutorial on animating guns but I can't seem to be able to get it working.
https://www.youtube.com/watch?v=1tRlSd49qmw&t=182s

Code here:
LocalScript in tool:

--Service--
local UserInputService = game:GetService("UserInputService")
local Players = game:GetService("Players")

--Variables--
local player = Players.LocalPlayer
local tool = script.Parent

local animations = script.Parent.Animations

--Functions--
UserInputService.InputBegan:Connect(function(input: Enum.KeyCode, gameProcessedEvent)
    if gameProcessedEvent then return end
    if input.Keycode == Enum.Keycode.R then
        if player.Character:FindFirstChild(tool.Name) then
            local animationTrack = player.Character:FindFirstChild("Humanoid").Animator:LoadAnimation(animations.Reload)
            animationTrack:Play()
        end
    end
end)

local idleAnimationTrack = player.Character:FindFirstChild("Humanoid").Animator:LoadAnimation(animations.Idle)

tool.Equipped:Connect(function()
    idleAnimationTrack:Play()
    end)
tool.Unequipped:Connect(function()
    idleAnimationTrack:Stop()
    end)

Script in ServerScriptService:

game.Players.PlayerAdded:Connect(function(player)
    player.CharacterAdded:Connect(function(character)
        task.wait(1)
        local motor6d = Instance.new("Motor6D")
        motor6d.Name = "ToolAttach"
        motor6d.Parent = character.RightHand
        
        character.ChildAdded:Connect(function(child)
            if child:IsA("Tool") and child:FindFirstChild("Body") then
                motor6d.Part1 = child.Body
            end
        end)
    end)
end)