Problem with viewing photos in preview and in large view using spacebar and arrow keys

Hello, her ist Holger from Germany. I need help with the new bridge

1. In an older version of bridge (till summer 22) I open a folder and show the thumbnails below as a filmstrip, for example, and in the preview I saw exactly one image, namely the image that I clicked on as a thumbnail in the filmstrip. I can switch from preview to large screen mode with the space bar. New bridge version: When I watched a few photos by using the arrow keys in the large screen mode and then go back with the space bar in the preview mode, my filmstrip has 2 images enabled and I see 2 images in the preview.

If I then use the spacebar to click on large-screen mode, I don't see the image that I just clicked small with the spacebar, but a different one. If I continue to work with preview mode and large-screen mode, I cannot use the arrow keys (cursor keys) to jump from one picture to the next, because the program shows pictures that I did not expect. I don't understand the logic.

Can I set bridge back to how it used to be? So that I can view the images in progressive order without two thumbnails enabled?

2. Can I set the new bridge so that the program does not scan my entire computer with all folders? I would like the following: I open a folder manually without a program with the mouse, for example on the desktop, click on the first image and bridge shows all images of this folder and nothing else. Bridge shouldn't have anything in "memory" either. There is always the message: Too many registers open and clear the cache.