Also, the pandemic hit DC really hard. DC is heavily reliant on commuters. It has one of the largest daytime-nighttime population changes in the country. But those government and knowledge workers are never coming back into the office at the same scale as before. Metro ridership has cratered, putting it in a budget crisis even when substantially reduced service levels. And lots of bars and restaurants that had built up over the last decade have closed down.
I will say, DC has some very charming and walkable neighborhoods. The area between DuPont Circle and Logan Circle is very cute, in a 1970s sort of way.