Help with my collision groups

[obsidian delta]

I know that there are still many bugs in this script, but the main problem is that the collision groups I coded isnt working. Here's what's supposed to happen:
When the player steps into the lobby queue, a border will spawn around it, preventing the player from leaving the queue. However, this restriction only applies to the player, allowing others to enter as well. But it just isn't worki8ng for some reason (code below)

local Players_In_Area = 0
local plrs = {}

local border = script.Parent.Parent.border
local plrCounter = script.Parent.BillboardGui.TextLabel


local exitEvent = game.ReplicatedStorage:FindFirstChild("exitLobbyEvent")

PhysicsService:RegisterCollisionGroup("player")
PhysicsService:RegisterCollisionGroup("barrer")
PhysicsService:CollisionGroupSetCollidable("player", "barrer", false)
border.CollisionGroup = "barrer"

script.Parent.Touched:Connect(function(hit)
    local char = hit:FindFirstAncestorWhichIsA("Model")
    
    hit.CollisionGroup = "player"

    if not plrs[char.Name] then
        if game.Players:FindFirstChild(char.Name) then
            plrs[char.Name] = 0
            Players_In_Area += 1
        
            for _, part in ipairs(char:GetDescendants()) do
                if part:IsA("BasePart") then
                    part.CollisionGroup = "player"
                    PhysicsService:CollisionGroupSetCollidable("player", "barrer", true)
                end
            end
            

            local player = game.Players:GetPlayerFromCharacter(char)
            local exitButton = player.PlayerGui.ExitGUI.TextButton
            exitButton.Visible = true
            
            exitEvent.OnServerEvent:Connect(function(plr)
                exitButton.Visible = false
                PhysicsService:CollisionGroupSetCollidable("player", "barrer", true)
                Players_In_Area = Players_In_Area - 1
            end)
            
        end
    end
end)

if Players_In_Area == 2 then
    print("2 plrs in lobby")
end

while true do
    print(Players_In_Area)
    plrCounter.Text = (Players_In_Area .. "/2")
    task.wait(1)
end```

Any help will be appreciated

[frosty surge]

yeah i can help

i'll send u the fixed script

local PhysicsService = game:GetService("PhysicsService")

local Players_In_Area = 0
local plrs = {}

local border = script.Parent.Parent.border
local plrCounter = script.Parent.BillboardGui.TextLabel

local exitEvent = game.ReplicatedStorage:FindFirstChild("exitLobbyEvent")

PhysicsService:RegisterCollisionGroup("player")
PhysicsService:RegisterCollisionGroup("barrier")

border.CollisionGroup = "barrier"

script.Parent.Touched:Connect(function(hit)
local char = hit:FindFirstAncestorWhichIsA("Model")
if not char then return end

local humanoid = char:FindFirstChildOfClass("Humanoid")
if not humanoid then return end

local player = game.Players:GetPlayerFromCharacter(char)
if not player then return end

if not plrs[player.UserId] then
    plrs[player.UserId] = true
    Players_In_Area += 1
    
    for _, part in ipairs(char:GetDescendants()) do
        if part:IsA("BasePart") then
            part.CollisionGroup = "player"
        end
    end
    
    PhysicsService:CollisionGroupSetCollidable("player", "barrier", true)
    
    local exitButton = player.PlayerGui.ExitGUI.TextButton
    exitButton.Visible = true
end

end)

exitEvent.OnServerEvent:Connect(function(plr)
if plrs[plr.UserId] then
plrs[plr.UserId] = nil
Players_In_Area -= 1

    local char = plr.Character
    if char then
        for _, part in ipairs(char:GetDescendants()) do
            if part:IsA("BasePart") then
                part.CollisionGroup = "Default"
            end
        end
    end
    
    plr.PlayerGui.ExitGUI.TextButton.Visible = false
    
    if Players_In_Area == 0 then
        PhysicsService:CollisionGroupSetCollidable("player", "barrier", false)
    end
end

end)

while true do
plrCounter.Text = (Players_In_Area .. "/2")
if Players_In_Area == 2 then
print("2 plrs in lobby")
end
task.wait(1)
end

tell me if it works

@obsidian delta

[obsidian delta]

alr