How to get peoples Names using FindFirstChild() ? [closed]

I was looking everywhere on the internet and i couldn't Find it so i decided to ask here. So i'm trying to make an admin script everything is going good but there's one problem. How do i get peoples Names by using find first child? my name is oskar2266001 so if i want to type ;ban osk it would ban me? Please help here's the code.

wait(3)

local Admin = "oskar2266001"

local BanList = Instance.new("Folder",game.ReplicatedStorage)

local Prefix = ";"



BanList.Name = "BanList"





local Players = game:GetService("Players")

for i, player in pairs(Players:GetPlayers()) do

    if player.Name == Admin then

        game.Players[Admin].Chatted:connect(function(msg)

            if msg == Prefix.."shutdown" then

            for i, player in pairs(Players:GetPlayers()) do

            game.Players[player.Name]:Kick("The Game was Shutdown By "..Admin)

    end

end


if msg:sub(1, 6) == Prefix.."kill " then

    local Target = game.Players:FindFirstChild(msg:sub(7))

        if Target then

            local Character = Target.Character

            if Character then

            Character.Humanoid.Health = 0

        end

    end

end


if msg:sub(1, 6) == Prefix.."kick " then

    local Target = game.Players:FindFirstChild(msg:sub(7))

            if Target then

            Target:Kick("You have Been Kicked By "..Admin)

            end

            end

        end)

    end

end