There is an official description of how to support the entire screen size. And as described in the layout folders:
res/layout/my_layout.xml // layout for normal screen size ("default") res/layout-small/my_layout.xml // layout for small screen size res/layout-large/my_layout.xml // layout for large screen size res/layout-xlarge/my_layout.xml
So, layout and layout-normal are in the same place, but in the new Android API there is no longer a folder with a layout, but only a layout folder. You should also know if there is a specific screen size layout in that the application is running, by default the application accepts the default layout.
EDIT
You may have different screen resolutions in the same folder that you can recognize from these images:

If you need a more specific layout for a specific resolution, you need to determine the exact screen size at runtime.
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