PHILOSPHY
Existentialism seeks individual freedom, choice, and responsibility in a world without inherent meaning. It pushes the idea that people define themselves through their actions and decisions. Existentialists often feel strong feelings of anxiety or despair due to the absence of certainty. Some believe this means you are free to create your own meaning, but this freedom comes with responsibility.
Basically everyone during Covid.
FOUNDER
Soren Kierkegaard is considered to be the father of existentialism which was later developed further by the likes of Jean-Paul Sartre, Simone de Beauvoir, and Martin Heidegger.
MAJOR WORKS
Being and Nothingness by Jean-Paul Sartre and Fear and Trembling by Soren Kierkegaard.
https://plato.stanford.edu/entries/kierkegaard/