How to Change Applications in Stage Manager With Keyboard?

keyboard shortcuts are either reserved in various Mac apps or just, you know, not available. You have to then use your mouse unless you use command tab to navigate between applications and some applications. Not all will let you use control tab to navigate to different windows or tabs within that application. To make it more baffling on the iPad, they have keyboard shortcuts, not a lot, but like the function left and right arrow move between what they call window groups,. which is stage manager groups.