BEFORE you read sorry my english is not very good :))

hello everyone im a PC gamer i just bought a ps4 pro and i need some help please with a few things

-- i have a 2k monitor for my pc will my ps4 pro run games on it at 2k or is it gona go down to 1080 coz what i know is that ps4 pro is a 4k device and i dont know how this work on playstation i read that you cant chose the scale or resolution for games on PlayStation so am i forced to go buy a 4k monitor ?

also i bought this just for last of us 2 and Kojima game any other PlayStation single player exclusives ( have a top end pc would rather play the multi plat games on it ) games you would recommend for me ..

GranTurismo looks cool as hell is the single player content on it any good ?

and last thing do i need to subscribe on playstation plus for TLOU2 and kojima games ?

thanks all........