https://wccftech.com/samsung-has-manufactured-only-a-handful-of-galaxy-s21-fe-units/

We are sure that the Galaxy S21 FE is going to launch soon. However, getting your hands on one might not be as easy as some would think. According to a tip from Max Jambor, Samsung has manufactured just over 10,000 Galaxy S21 FE units so far. The number might look significant to some, but it is considered a handful in the smartphone industry for all the right reasons. The number is small enough not even to match the requirements for a single region.

We are fully aware that the Galaxy S21 FE will be available in both Snapdragon 888 and Exynos 2100 variants. However, there are many manufacturing challenges, and the global chip shortage is also a thing. Not to forget, Samsung's primary focus at the moment is working on the Galaxy Z Fold 3 and Galaxy Z Flip 3, all the while preparing for the Galaxy S22 series. So, it is only fair that the company is having some issues focusing its energy.