Looks pretty good to me, too.
You may be seeing the same thing I saw when I started getting into B&W film seriously. Because everything is represented in shade of gray, until I got used to it, I thought everything was contrasty. Having color seems to distract me from seeing contrast.
Also, please note, your 2nd, 3rd, and 4th images were taken in contrasty scene. Dark haired woman in front of a brightly lit light colored door, beach in what appear to be a brightly lit day with little cloud, and open out door by the lake, all represents perhaps the harshest scene you'd encounter. By the way, your first image is gorgeous!
It's hard to judge from scanned image but they seem to be just fine. Relax and enjoy. Yup, Arista Primula is a great stuff. I have bricks of them.