During the original animated series, Retsuko attempted to find her place in the world, moving from an accounting firm to becoming an idol to eventually finding the path that she needed to take to find happiness.

Source: https://comicbook.com/anime/news/aggretsuko-cosplay-retsuko-best-anime-girls/

Retsuko is stuck at a job that she hates with a chauvinist pig for a boss, and she wants nothing more than to simply be happy.

Source: https://screenrant.com/great-anime-female-protagonists-woman-led/