Do not understand the appeal

Rating: 2/10 (16 May 2020)

The current IMDB rating of this film is 7.9 and it has received a lot of praise from critics. However after watching this movie and seeing some critics and fans claiming how funny or "bloody brilliant" it is, do not get as to how.
Found this film very dull, and generic. The humor is more quirky and nothing is laugh out loud as people keep mentioning. There are some decent scenes of gore towards the end but nothing special.
Having enjoyed zombie movies, one does not understand as to how this film has received the mass praise it has gotten.
As a film nothing exactly is explained. We simply see the zombies appear without any reasoning, then the characters don't exactly freak out until one one their loved ones gets bitten and turn into a zombie. We understand this film is a spoof but it just wasn't clicking.
Shaun of the Dead is filled with annoying characters (outside of Simon Pegg), with a lot of back and forth banter and dialogue. The best scenes are within the last 30 minutes but even then it was relatively dull.
Perhaps this is one of those films loved by British folks who are accustomed to their humor.