Not finding an easy way to Send with keyboard shortcut

I’m on a Mac and I found I can press send with Command+Enter, but when I go to make a code change and flip back to Postman, it doesn’t focus enough so that the keyboard command works, and I have to click in a sub-window or something to get it to work. Sometimes it focuses enough after flipping back to the window but usually not.

Is there something that is just window-level recognized as enough focus for the keyboard command to work? It’s just as frustrating to have to switch to the mouse each time to click into part of the window then it is to click the Send button when I’m primarily coding with just the keyboard and using keyboard shortcuts.