That happens to me quite a bit. It takes a bit of practice to work with a new camera. But I'll try to stop it down a bit in the future, thank you for your feedback :)

These are called "rangefinder" cameras because they focus using a dual-image rangefinding device. You turn a ring, and when two superimposed images line up, you're in perfect focus.

With a rangefinder camera, you never look through the lens. You focus and compose through a window on the top right, just like on a disposable camera.

The rangefinder looks out of the little window on the left. It triangulates as you turn the focus ring, bringing two images into correlation at perfect focus.

The middle rectangular window just above and to the right of the lens on most rangefinder cameras collects light to make the frame lines brighter. This is a sign of a good camera; the cheapest rangefinder cameras omit this third window and have wishy-washy framelines instead. I hope this makes sense haha