Did you have to saw cut it? The flooring job I did last year I only saw cut any details. Straight cuts I scored with a utility knife and snapped it apart.
Walls are never as square as you think. Try doing a continues floor through entire floor of a house. Living room, dining, kitchen, 3 bedrooms, 2 baths, closets... I did end up with a few transitions, but it was all parallel.
Used a jigsaw clamped upside down in my workmate. Works slick. Yes, i bought a utility knife with 1” blade for scoring. And the walls are crooked too. Had to do some trimming to close the gaps. Last piece at door jamb took an hour.