What do expats find most challenging?

"One of the most challenging aspects of the local culture for expats in Cologne is the language barrier. Although many people in the city speak English, the majority of the population speaks German, and it can be difficult for expats to communicate with locals without a good grasp of the language. Additionally, the local culture is quite traditional and conservative, and expats may find it difficult to adjust to the more formal social norms. Finally, the cost of living in Cologne can be quite high, and expats may find it difficult to find affordable housing and other necessities," remarked another expat in Cologne, Germany.