How do I make things only show up on one client????

Through a local script, I turn particles on and off by enabling them. I also have filtering enabled on. The problem is, no matter what I do they always show up on all the clients. I tried cloning the particles through the local script and stuff, but it just never works. The script is in the starter character and I tried moving it to other places to see if it would work. I tried having the particles cloned from replicated first and replicated storage. I also tried testing in the studio and in just a normal Roblox server. Am I just dumb and not realizing that I have to do something else? The particles don't show up on the server, but on every single client.

All my script does is create a sound, play a sound, turn on some particles, wait for the sound to finish, then destroy the sound and then disable all the particles. I'll put some of that script if it helps but I really don't understand what is going on!

I really need help I've been looking up stuff on the internet for a couple of days now!

local replicatedfirst = game:WaitForChild('ReplicatedFirst')
local stuff = game.Workspace.TutorialStuff
local confetti1 = stuff.Confetti1
local confetti2 = stuff.Confetti2
local part = stuff["Confetti Trigger"]
local debounce = false
local player = game.Players.LocalPlayer

part.Touched:Connect(function(hit)
	if not hit.Parent:FindFirstChild("Humanoid") then return end
	if hit.Parent.Humanoid.Health == 0 then return end
	if debounce == true then return end
	debounce = true

	local particle1 = confetti1:GetChildren('ParticleEmitter')
	local particle2 = confetti2:GetChildren('ParticleEmitter')
	local sound = Instance.new('Sound')
	sound.Parent = hit.Parent
	sound.SoundId = 'rbxassetid://2762666255'
	sound.Name = 'PartySirens'
	sound.Volume = 0.5
	
	sound:Play()
	
	for i = 1, #particle1 and #particle2 do
		particle1[i].Enabled = true
		particle2[i].Enabled = true
	end
	repeat wait() until sound.TimePosition >= 6.3

	for i = 1, #particle1 and #particle2 do
		particle1[i].Enabled = false
		particle2[i].Enabled = false
	end
	sound:Destroy()
	debounce = false
end)

stuff = where everything is located in workspace

confetti1/2 = part that contains particles