its a very sample database library.
more infomation https://medoo.in/
composer require thefunpower/wp_medoo
In your plugin file add code
include __DIR__.'/vendor/autoload.php';
$res = db_get("user",'*',db_raw("WHERE DATE_FORMAT(<created_at>,'%Y-%m') = '".$today."'"));
$res = db_pager("user",'*',[]);
$res = db_get_one("user",'*',[]);
$res = db_get_sum("user",'price',[]);
$res = db_get_count("user",[]);
$date1 = '2022-11-01';
$date2 = '2022-12-02';
$where = db_between_date('created_at',$date1,$date2);
pr($where);exit;
$res = db_get("user",'*', $where);
$date1 = '2022-10';
$date2 = '2022-11';
$where = db_between_month('created_at',$date1,$date2);
$res = db_get("user",'*', $where);