While I never owned a Dreamcast, my brother had one. He didn’t have a huge number of games either, but this was one of his best choices.
Looking back now, the graphics are pretty terrible, but they were at their prime about 20 years ago.
I don’t like most football games these days, they’re just too serious and complicated. NFL 2K1 wasn’t heavy on coaching management, draft picks, and other complicated features seen in recent gridiron games. You just played football, and they had a very fun experience.