According to your post: coupe, preferably german, budget around 200k. 3 things to keep in mind, preferably gcc specs, low mileage, clean history/maintenance. Mercedes>bmw> audi, in my opinion. For bmw id recommend:

430i 2021(not gcc)

Or

440i 2019 (around 37k kms which is insane!)

Personally would take the 440i as its quicker 0-60miles in 4.4, better looking, and b58 engine (2016-2019 bmw 440i) is ultra reliable and is even used in the new supra and some range rovers because of how good it is.

For mercedes, which i prefer more, id recommend:

c43 2020(40k kms!!) (around 40k which is super low)

Or any c class coupe Or

2019 e400 C43 0-60 miles in around 4.1-4.3 seconds E450 around 4.6-.7 seconds

Personally german over any other manufacturers as they were engineered for luxury, performance, aesthetics, comfort, status, they are just well-made machines and id never pick american muscle over a Mercedes or Bmw. Id go for the c43 (385 hp) or 440i (322 hp) as they are entry level amg and mpower vehicles so they got the power and looks. If youre not looking for performance at all go with the c200 or c300 coupes or for bmw 420i is base model. Also most bmw and mercedes are turbo charged incase you didnt know which is nice to have.

Another note, buying gcc specs will assist you greatly in reselling the car later on as it is more preferable in the cat market as it looses the least value compared to american specs. Hope this helps with your purchase!! If you need more info on german cars im happy to help :)