Its on Netflix if you wanna watch it. Interesting show.
How to play the Queens gambit

I think you made a mistake somewhere because after 16...Qxd4 white is just down a pawn.

Queen's Gambit...
https://en.wikipedia.org/wiki/Queen%27s_Gambit
https://simplifychess.com/visual-guides/queens-gambit/index.html
https://simplifychess.com/queens-gambit/index.html
https://www.youtube.com/results?search_query=jim%27s+chess+channel+queen%27s+gambit
https://www.youtube.com/results?search_query=hanging+pawns+queen%27s+gambit
https://www.chessable.com/chess-openings/s/queen's%20gambit
https://www.amazon.com/Starting-Out-Queens-Gambit-Declined/dp/1857444264/ref=sr_1_1?dchild=1&keywords=starting+out+queens+gambit&s=books&sr=1-1
https://www.amazon.com/Queens-Gambit-Declined-Matthew-Sadler/dp/1857442563/ref=sr_1_9?crid=3LB6UMIW6ZBVB&dchild=1&keywords=queens+gambit+chess&s=books&sprefix=queens+gambit+chess%2Cstripbooks%2C214&sr=1-9
https://www.amazon.com/Understanding-before-Moving-Queens-Structures/dp/9492510421/ref=sr_1_1?dchild=1&keywords=understanding+before+moving+queens+gambit&s=books&sr=1-1
Can anyone say how to properly play the queens gambit