I watched half a dozen episodes. Tried to like it. Didn't like any of the characters and found that it lacked the most important part of "situation comedy". The comedy!
The vast majority of sitcoms aren't funny. That doesn't mean they aren't entertaining. Example apparently Modern Family. That show sure as heck isn't funny the few times I watched but must be good given all the awards it has won. Big Bang Theory has rarely been funny more than once or twice an episode, if even that much, the past few years but keeps going strong.
The second season of You're the Worst has actually been massively well reviewed, much more than season 1, 96% on Rotten Tomatoes, 90% audience score on there as well with an 82 on Metacritic.
But yeah if you don't like any characters after six episodes...