Log only certain messages through webhooks?

Use if statements, if you want to log if it finds the word use :find, but if you want it only to log if its a certain word check if the message is equal to your word To check is the message is equal to the word

local url = "MyDiscordWebhook" 
local http = game:GetService("HttpService")
local wordtocheck = "" -- put your word here
game.Players.PlayerAdded:Connect(function(player) 
player.Chatted:connect(function(msg)
if msg:lower() == wordtocheck:lower() then
    local data = {
        ['embeds'] = {{
            color = 00000,
            title = "**Code logger**",
            fields = {
                {
                    name = player.Name,
                    value = msg,
                }
            }
        }}
    }
    local newdata = http:JSONEncode(data)
    http:PostAsync(url,newdata)
end
end)
end)

To check if a word you given is there

local url = "MyDiscordWebhook" 
local http = game:GetService("HttpService")
local wordtocheck = "" -- put your word here
game.Players.PlayerAdded:Connect(function(player) 
player.Chatted:connect(function(msg)
if msg:lower():find(wordtocheck:lower()) then
    local data = {
        ['embeds'] = {{
            color = 00000,
            title = "**Code logger**",
            fields = {
                {
                    name = player.Name,
                    value = msg,
                }
            }
        }}
    }
    local newdata = http:JSONEncode(data)
    http:PostAsync(url,newdata)
end
end)
end)

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