How do i change my code so that instead of pressing c you have to click with mouse?

I want to make a code where a player can use a tool that activates when you have it out and left click to shoot out a electric bird in front them. I have a script that shoots out a electric bird when the player presses c while holding the tool.

In starter pack i have a tool call Thunder Bird. In the tool i inserted a string value called Active and a string value called Equip. I also have a local script in the tool.

--- Equip/UnEquip
local Tool = script.Parent

Tool.Equipped:Connect(function()
    Tool.Equip.Value = true
end)

Tool.Unequipped:Connect(function()
    Tool.Equip.Value = false
end)

--- Skill
local UIS = game:GetService("UserInputService")
local plr = game.Players.LocalPlayer
local Mouse = plr:GetMouse()
local Debounce = true
Player = game.Players.LocalPlayer
Animation = Instance.new("Animation")
Animation.AnimationId = "rbxassetid://4608419697"

UIS.InputBegan:Connect(function(Input)
    if Input.KeyCode == Enum.KeyCode.C and Debounce == true and Tool.Equip.Value == true and Tool.Active.Value == "None" then
        Debounce = false
        Tool.Active.Value = "HieShock"
        wait(0.1)
        Track1 = Player.Character.Humanoid:LoadAnimation(Animation)
        Track1:Play()
        wait(0.15)
        script.Fire:FireServer(plr)
    local hum =  Player.Character.Humanoid
    for i = 1,30 do
        wait()
        hum.CameraOffset = Vector3.new(
            math.random(-1,1),
            math.random(-1,1),
            math.random(-1,1)
        )
    end
    hum.CameraOffset = Vector3.new(0,0,0)
        wait(0.15)
        Tool.Active.Value = "None"
        wait(2)
        Debounce = true
    end
end)

in the local script i have a remote event named Fire and a script called Skill in the remote event Fire

script.Parent.OnServerEvent:Connect(function(plr)
    local Alive = true
    local Projectile = game.ReplicatedStorage.HieDF.HieShock.IceBird:Clone()
    Projectile.Parent = workspace
    Projectile.CanCollide = false
    Projectile.Anchored = false
    Projectile.CFrame = plr.Character.HumanoidRootPart.CFrame * CFrame.new(0,4,0) * CFrame.fromEulerAnglesXYZ(0,0,0)
    Projectile.Touched:Connect(function(hit)
        if hit.Parent:FindFirstChild("Humanoid") and hit.Parent.Name ~= plr.Name then
            hit.Parent.UpperTorso.Velocity = plr.Character.UpperTorso.CFrame.UpVector * 125
            local HitEffect = game.ReplicatedStorage.HieDF.HieShock.ShockwaveFX:Clone()
            local ShockwaveFX = game.ReplicatedStorage.HieDF.HieShock.ShockwaveFX:Clone()
            HitEffect.Parent = workspace
            HitEffect.CFrame = hit.Parent.HumanoidRootPart.CFrame
            ShockwaveFX.Parent = workspace
            ShockwaveFX.CFrame = hit.Parent.HumanoidRootPart.CFrame
            HitEffect.CanCollide = false
            HitEffect.Anchored = true
            hit.Parent.Humanoid:TakeDamage(5 + plr.Data.DevilFruit.Value)
            Projectile:Destroy()        
            for i = 1,25 do
                wait(.05)
                HitEffect.Size = HitEffect.Size + Vector3.new(0.5,0.5,0.5)
                HitEffect.Transparency = HitEffect.Transparency + 0.1
                ShockwaveFX.Transparency = HitEffect.Transparency + 0.1
            end 
            HitEffect:Destroy()
        end
        if hit.Parent:FindFirstChild("Enemy") and hit.Parent.Name ~= plr.Name and hit.Parent.Enemy.Health >= 0 and Alive == true then
            hit.Parent.UpperTorso.Velocity = plr.Character.UpperTorso.CFrame.UpVector * 125
            local HitEffect = game.ReplicatedStorage.HieDF.HieShock.ShockwaveFX:Clone()
            local ShockwaveFX = game.ReplicatedStorage.HieDF.HieShock.ShockwaveFX:Clone()
            HitEffect.Parent = workspace
            HitEffect.CFrame = hit.Parent.HumanoidRootPart.CFrame
            ShockwaveFX.Parent = workspace
            ShockwaveFX.CFrame = hit.Parent.HumanoidRootPart.CFrame
            HitEffect.CanCollide = false
            HitEffect.Anchored = true
            hit.Parent.Enemy:TakeDamage(5 + plr.Data.DevilFruit.Value)
            Projectile:Destroy()
            if hit.Parent.Enemy.Health <= 0 then
                Alive = false
                --Kill rewards
                local Leader = plr:FindFirstChild("Quest")
                plr.Data.Beli.Value = plr.Data.Beli.Value + game.ReplicatedStorage.KillRewards:FindFirstChild(hit.Parent.Name).Beli.Value
                plr.Data.Exp.Value = plr.Data.Exp.Value + game.ReplicatedStorage.KillRewards:FindFirstChild(hit.Parent.Name).Exp.Value
                if Leader.Type.Value == game.ReplicatedStorage.KillRewards:FindFirstChild(hit.Parent.Name).Type.Value then
                if Leader ~= nil then
                Leader.Amount.Value = Leader.Amount.Value + 1
                Alive = true    
              end
             end
            end         
            for i = 1,25 do
                wait(.05)
                HitEffect.Size = HitEffect.Size + Vector3.new(0.5,0.5,0.5)
                HitEffect.Transparency = HitEffect.Transparency + 0.1
                ShockwaveFX.Transparency = HitEffect.Transparency + 0.1
            end 
            HitEffect:Destroy()
        end
    end)
    local BV = Instance.new("BodyVelocity",Projectile)
    BV.MaxForce = Vector3.new(math.huge,math.huge,math.huge)
    BV.Velocity = plr.Character.HumanoidRootPart.CFrame.LookVector * 110
    wait(0.75)
    BV:Destroy()
    wait(0.25)
    Projectile:Destroy()
    end)

In replicated storage i have a folder called HieDf and in that folder i have another folder called HieShock that has a mesh part called IceBird that is the bird that gets shooten.