?Some problems I have with coin system

I have some questions for a game that I'm making and I wanted to put all of them in one place so it may be a bit messy. I'm a beginner at lua so I may have some dumb mistakes. If you misunderstood something tell me and I'll try to explain it better.

I'm making an obby game. I want to add coins around the map that when players collects them and get some cash. To spawn the coins I got a coin model in the Replicated Storage and when a player joins I use a function in local script in the StarterGui to Clone the coin.

local flr = Instance.new("Folder", game.Workspace)
flr.Name = "Coins"

function SpawnCoins(pos, num)
	
--Define variables.
	local coin = game.ReplicatedStorage.Coin:Clone()
	coin.Parent = flr
	coin.Anchored = true
	coin.Name = "Coin"..num
	
--Spawn coin.
	coin.Position = pos
end


game.Players.PlayerAdded:Connect(SpawnCoins(Vector3.new(-20.192,2.943,1.5),1))
game.Players.PlayerAdded:Connect(SpawnCoins(Vector3.new(-20.192,2.943,-5.5),2))
game.Players.PlayerAdded:Connect(SpawnCoins(Vector3.new(-20.192,2.943,-11.5),3))
game.Players.PlayerAdded:Connect(SpawnCoins(Vector3.new(-20.192,2.943,-17.5),4))
game.Players.PlayerAdded:Connect(SpawnCoins(Vector3.new(-20.192,2.943,-23.5),5))

When the game starts it shows me an error for each line of: game.Players.PlayerAdded:Connect(SpawnCoins(Vector3.new(x,y,z) in the Output: Attempt to connect failed: Passed value is not a function

It still works but I would like to fix it.

Since I'm using Local Scripts to control the coins (spinning and floating) the scripts are in the StarterGui. Because of it I have to create the scripts for each coin because I have multiple models called "Coin" and one function can't handle all of them (as far as I know). To fix the problem I'm giving each coin a number (Coin1, Coin2 etc...), so I need different script for each coin. **My question is if there's a faster way to do this? **

In order to make it that when a player collects a coin it will be removed for him but not for the other players I've enabled Filtering and I'm creating the gold coins using a Local Script in the StartGui.

I've got a problem, when a player collects a coin the coin disappears for all the players. (I've tested it in a local server with 2 Players)

This is the code that removes the coin and call the remote function to give the money, Most of the code down here wasn't wrote by me, it's from a coin model from the assets store (It's in a local script):

local coin = game.Workspace:WaitForChild("Coins"):WaitForChild("Coin1")
function onTouched(part)
	local h = part.Parent:findFirstChild("Humanoid")
	if (h~=nil) then
		local thisplr = game.Players:findFirstChild(h.Parent.Name)
		if (thisplr~=nil) then
			local stats = thisplr:findFirstChild("leaderstats")
			if (stats~=nil) then
				local score = stats:findFirstChild("Cash")
				if (score~=nil) then
					print("work")
				end
			end
		end
		coin:Remove()
	end
end

coin.Touched:connect(onTouched)

Another problem I have is that when I call the Remote Function (when I've used print() it worked) the script doesn't remove the coin.

Thanks ahead

I am lazy to explain :)

There were some probably with your first script, and I fixed it:

local flr = Instance.new("Folder", game.Workspace)
flr.Name = "Coins"

local Spawns = {
	Vector3.new(-20.192,2.943,1.5),
	Vector3.new(-20.192,2.943,-5.5),
	Vector3.new(-20.192,2.943,-11.5),
	Vector3.new(-20.192,2.943,-17.5),
	Vector3.new(-20.192,2.943,-23.5)
}


game.Players.PlayerAdded:Connect(function()
	for num,pos in pairs(Spawns) do
		
		--Define variables.
    	local coin = game.ReplicatedStorage.Coin:Clone()
    	coin.Parent = flr
    	coin.Anchored = true
    	coin.Name = "Coin"..num

		--Spawn coin.
    	coin.Position = pos
	end
end)

and your second one, also fixed:

while wait() do
	local Coins = game.Workspace:WaitForChild("Coins"):GetChildren()
	for i,v in pairs(Coins) do
		v.Touched:Connect(function(part)
		    if part.Parent:FindFirstChild("Humanoid") then
		        local thisplr = game.Players:FindFirstChild(part.Parent.Name)
		        if thisplr then
		            local stats = thisplr:FindFirstChild("leaderstats")
		            if stats then
		                local score = stats:FindFirstChild("Cash")
		                if score then
		                    print("work")
		                end
		            end
		        end
		        v:Destroy()
		    end
		end)
	end
end