Is there a program / application for Windows (10) in which you can delay / stop the termination of a Tastenducks?

Question sounds stupid, is you too, but:

In another application, when performing an action I'm "forced" to have to repeatedly enter a certain key or repeatedly click on the "mouse button links".

But now I would like my keyboard on my laptop or the mouse does not wear it or the mechanism under the button as well as the electronic forwarding of the key press each time further "damaged" is or wear.

So I want to trigger the keypress once, and then decide for myself when the repetition will stop. So it has to be an "automatic repetition of the keystroke".

(Please do not laugh, I'm serious, because of relatively expensive notebook and high effort to replace the keyboard)

Do you know any programs / applications that can help me?

Look at "AutoIt".

Such an application is written relatively quickly, are you talking about a browser or, indeed, an independent program?

Do you want to run the whole thing in the background or is it enough for you to keep it in the foreground?

If I have access to the practices of this program with my application or applications, ie what I would like to use there, I would not care if it would be in the foreground or in the background.

If it helps you we could talk by PM or similar I get some more information, if necessary, I can then do that to you.