The metamorphosis tells the story of Gregor that one day he wakes up transformed into a giant insect. This transformation causes some problems for Gregor, such as not being able to go out to work, not being able to use objects common to all human beings and being seen as something disgusting and disgusting by people around you.
Gregor's problems may indicate a connection to Kafka's education (writer of The Metamorphosis). That's because Kafka was Jewish in a society formed primarily by Czechs and Germans, where anti-Semitism was strong and provided Kafka with many privations. Like Gregor, Kafka was seen as something disgusting, disgusting, filthy and deprived of jobs, relationships and objects just because he was Jewish.