At the same time they're also selling the country to the highest bidder, which for now are various Arab states like the UAE and the Saudis (lookup the Belgrade waterfront as an example), though there's also lots of Chinese money flowing into the pockets of the politicians as well.
It's a horrifically corrupt country with legitimate war criminals and their leashed dogs (like current PM Vucic) still holding the reigns, trying to scam and bruteforce their way to as much money as they can muster before the inevitable happens. Meanwhile it experiences insane levels of brain drain as anyone sensible and with the means to (my parents in the 80s and myself and pretty much everyone else in my family now included) gets the fuck out and never looks back twice.
Mind you, myself and most Serb diaspora I know don't want anything to do with the place. I was born and grew up in Indonesia and have visited Serbia a handful of times at most, so it's not a country I'd call home in any sense of the word. Even then, it still depresses me how hopeless the situation seems for anyone living there, as relayed to me by the few friends and family that are still stuck there with no way out.