i'm Still relatively new to remotes and stuff and i'm trying to fix a lot of the broken scripts but i cant seem to figure out whats wrong with this one the script would play through but it'll only be client sided

bin = script.Parent
Backpack = bin.Parent
me = Backpack.Parent
Character = me.Character
humanoid = Character.Humanoid
torso = Character.Torso
rightarm = Character["Right Arm"]
leftarm = Character["Left Arm"]
rightleg = Character["Right Leg"]
leftleg = Character["Left Leg"]
LeftShoulder = torso["Left Shoulder"]
RightShoulder = torso["Right Shoulder"]
LeftHip = torso["Left Hip"]
RightHip = torso["Right Hip"]
Neck = torso["Neck"]
RightShoulderC0 = CFrame.new(1, 0.5, 0, 0, 0, 1, 0, 1, 0, -1, 0, 0)
LeftShoulderC0 = CFrame.new(-1, 0.5, 0, 0, 0, -1, 0, 1, 0, 1, 0, 0)
LeftHipC0 = CFrame.new(-1, -1, 0, 0, 0, -1, 0, 1, 0, 1, 0, 0)
RightHipC0 = CFrame.new(1, -1, 0, 0, 0, 1, 0, 1, 0, -1, 0, 0)

function null()
RightShoulder.C0 = RightShoulderC0
LeftShoulder.C0 = LeftShoulderC0
RightHip.C0 = RightHipC0
LeftHip.C0 = LeftHipC0
end

local COOLDOWN = 1.5




r = game:service("RunService")


MAX_VELOCITY  = 180
MIN_VELOCITY  = 20

PULLBACK_TIME = 0

wait(0.1)



function computeDirection(vec)
	local lenSquared = vec.magnitude * vec.magnitude
	local invSqrt = 1 / math.sqrt(lenSquared)
	return Vector3.new(vec.x * invSqrt, vec.y * invSqrt, vec.z * invSqrt)
end

enabled = true
function onButton1Down(mouse)
	if not enabled then
		return
	end

	local player = game.Players.LocalPlayer
	if player == nil then return end

	enabled = false
	mouse.Icon = "rbxasset://textures\\GunWaitCursor.png"

	local pos = mouse.Hit.p
	pos1 = torso.Position
    torso.Anchored = true
FireGrow1 = Instance.new("Part")
FireGrow1.Parent = Character
FireGrow1.Name = "FireGrow"
FireGrow1.CanCollide = false
FireGrow1.Anchored = true
FireGrow1.Shape = "Block"
FireGrow1.Locked = true
FireGrow1.Transparency = 0.9
FireGrow1.Reflectance = 0.5
FireGrow1.TopSurface = "Smooth"
FireGrow1.BottomSurface = "Smooth"
FireGrow1.formFactor = "Symmetric"
FireGrow1.BrickColor = BrickColor.new("White")
FireGrow1.CFrame = torso.CFrame * CFrame.new(0, 0, -(pos1-pos).magnitude) * CFrame.Angles(1.57, 0, 0)
FireGrow1.Size = Vector3.new(1, 1, 1)
if (torso.Position-pos).magnitude <= 500 then
for i = 1, 20 do	
FireGrow1.Size = FireGrow1.Size + Vector3.new(2, 2, 2)
FireGrow1.CFrame = torso.CFrame * CFrame.new(0, 0+(i/2), -(pos1-pos).magnitude)
wait(.001)
end
for i = 1, 20 do	
     for u, c in pairs(workspace:GetChildren()) do
     if c.Name ~= me.Name then
      h = c:findFirstChild("Humanoid")
      t = c:findFirstChild("Torso")
      if h ~= nil and t ~= nil then
       if (FireGrow1.Position-t.Position).magnitude <= 30 then
if h.Parent:findFirstChild("Logia") == nil or h.Parent:findFirstChild("Logia").Value == false or Character.Busoshoku.Value == true and h.Parent:findFirstChild("ForceField") == nil then
          h.Health = h.Health - 0.5
        if i < 50 then
          h.Sit = true
          h.Health = h.Health - 0.5
        end
        if i >= 50 then
         if h ~= nil and t ~= nil then
          h.Sit = true
          h.Health = h.Health - 0.5
          end
         end
        end
       end
      end
     end
    end
wait()
end
    torso.Anchored = false
for i = 1, 50 do	
     for u, c in pairs(workspace:GetChildren()) do
     if c.Name ~= me.Name then
      h = c:findFirstChild("Humanoid")
      t = c:findFirstChild("Torso")
      if h ~= nil and t ~= nil then
       if (FireGrow1.Position-t.Position).magnitude <= 30 then
if h.Parent:findFirstChild("Logia") == nil or h.Parent:findFirstChild("Logia").Value == false or Character.Busoshoku.Value == true and h.Parent:findFirstChild("ForceField") == nil then
         h.PlatformStand = true
        if i < 50 then
          h.Sit = true
          h.Health = h.Health - 0.5
        end
        if i <= 50 then
         if h ~= nil and t ~= nil then
          h.Sit = true
          h.Health = h.Health - 0.5
          end
         end
        end
       end
      end
     end
    end
wait()
end
end
null()
    FireGrow1:Remove()
    torso.Anchored = false
	wait(3)
	mouse.Icon = "rbxasset://textures\\GunCursor.png"
	enabled = true

end

function onSelected(mouse)
	mouse.Icon = "rbxasset://textures\\GunCursor.png"
	mouse.Button1Down:connect(function() onButton1Down(mouse) end)
end

script.Parent.Selected:connect(onSelected)
Anonymous