I now have a second monitor that I want to work with. How can I set it so that Krita is displayed without tools on the 1st monitor and Krita with the tools on the second monitor? I have Win 10

In krita, go to Window >new window. This will open a new window of the same krita instance, so there you can open the same documents with window > new view > view name.
To not display tools there, you can either change the workspace with no dockers (button on top right to save current docker layout) or press tab to enter canvas only mode (which I would recommend).
Then just move this new window to your second monitor.

wojtryb, Unfortunately the process doesn't work. I have Krita on both sides, but when I turn off the dockers, the dockers on both monitors are gone. Is there no video there? Or can you do one? Or another. That would be great. Greeting

Then maybe try to go into canvas-only mode by pressing tab?