I am a horror person for sure but I also occasionally watch dark comedies. I wouldn't necessarily call this a dark comedy, but it's not exactly horror-comedy either, because there's very little about it that's actually scary. In some weird way it reminded me of 1980s silly parodies of other movies but I can't really put my finger on which one.
I laughed out loud several times, and I thought the ending was great. The main character is a lovable loser who actually has a lot of interesting hobbies which he's tried to turn into businesses, but his attempts at being an entrepreneur are met with defeat each time so he settles for working from home doing customer service calls for a terrible toothpaste that everyone hates. This aspect of his personality is very important because it sets up the narrative for the entire film.