"make a script so that if a player joins or leaves its logged to a webhook. make sure its a fancy embed which will show the users display name and actual name and profile picture and the users profile link"

```lua
-- server script (ServerScriptService) 
local HttpService = game:GetService("HttpService")
local Players = game:GetService("Players")

local WEBHOOK_URL = "YOUR_WEBHOOK_URL_HERE"

local function sendWebhook(player, action)
    local data = {
        ["embeds"] = {{
            ["title"] = "Player " .. action,
            ["fields"] = {
                {
                    ["name"] = "Display Name",
                    ["value"] = player.DisplayName,
                    ["inline"] = true
                },
                {
                    ["name"] = "Username",
                    ["value"] = player.Name,
                    ["inline"] = true
                },
                {
                    ["name"] = "Profile Link",
                    ["value"] = "https://www.roblox.com/users/" .. player.UserId .. "/profile",
                    ["inline"] = false
                }
            },
            ["thumbnail"] = {
                ["url"] = "https://www.roblox.com/bust-thumbnail/image?userId=" .. player.UserId .. "&width=420&height=420&format=png"
            },
            ["color"] = action == "joined" and 65280 or 16711680 -- Green for join, Red for leave
        }}
    }
    
    local jsonData = HttpService:JSONEncode(data)
    
    HttpService:PostAsync(WEBHOOK_URL, jsonData, Enum.HttpContentType.ApplicationJson)
end

Players.PlayerAdded:Connect(function(player)
    sendWebhook(player, "joined")
end)

Players.PlayerRemoving:Connect(function(player)
    sendWebhook(player, "left")
end)
```
Please replace `YOUR_WEBHOOK_URL_HERE` with the actual webhook URL you want to use. This script will send a POST request to the specified webhook URL when a player joins or leaves the game. The embed will display the player's display name, username, profile picture, and a link to their Roblox profile. The color of the embed will be green when a player joins and red when a player leaves.