show captcha after few login attempts

i am using laravel 5.6 and php 7

as you all know captcha is boring but safe so i want to show captcha to the guest after 5 attempts of login to laravel app

i don't want to use laravel throating

i want to store ip address in data base and when attempts become more than 5 captcha appear

i have make this code

    $IPaddress = $_SERVER["REMOTE_ADDR"];
    $usser = new Logs;
    $usser->ip_address = $IPaddress;
    $usser->attempts = $usser->attempts+1;
    $useer->save();

i have make the data base with ip and attempts rows and columns

but i don't know where to put this code

via Chebli Mohamed