I had the same reaction. I saw that it was listed as a comedy and went into it expecting some dark comedy, but what I got felt more drama-heavy.
i found a bunch of funny parts in the show but it isn't a classical comedy in that sense. It has plenty of funny moments.
Also horror if you want to see one of the most depressing shows watch rumbling hearts…that's budd dwyer worthy depressing.
EDIT: well this was actually quite good. It kept true to zombie stuff but didn't go all super creepy with it so I actually enjoyed it.
Though, every time I hear main characters name I think of churros.