This is one of the realistic zombie movie. During covid period, we can related to the characters and plot. Although Covid is not as bad as zombie situation, we might sometimes caught up in a situation which we didn't prepare for.

The movie is very much focus on characters and slowly developing a story and how they react in those situations.
In the end.. we are just ordinary people trying to survive in those unexpected situations.

Give it a try. There can be some lessons that we can learn.