Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. I found coupon for you. Check this out.
Link: Banggood product page
Coupon (1171.79 USD): Terence
(CouponsFromChina.com tip: just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGXMH5MX, BGITXMI5X, 451feb, BGXMSP07, BGXMH5MK, BGXMH501, BGXMP15M1, 13f142, BGXMP15M2, BGXMP15M4, BGXMP15M5, BGXMP15M6, BGXMP15M7, BGXMP15M8, BGXM15SP2, BGb3a84b, BG981a07, BGc3f8d3, 6GSGIT, BGb96b91, BGedc515, BGab62bd, BGcee108, BGITXMLP4, 2022ACTIESNL
(these coupons are old, so probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for Xiaomi RedmiBook Pro 15 2021 Laptop i5-11300H MX450 16/512GB.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).