The narrow surface of these can not see the texture clearly, not the realistic marble as, I want to know how the correct uv to expand.
To find the offending UV section, go to the UV Editing tab, and in the top left of the screen, enable UV Sync Selection (the button with the two arrows). In the viewport on the right, enter edit mode, and select the face(s) that need re-sizing/re-orienting. Note this only works properly in face select mode. With the Sync enabled, your selected face will be selected (highlighted) on the UV map as well. You can then resize it if you have room (or overlapping is not an issue), or you may decide that you need to scale all your islands, or even unwrap again altogether - either way, at least you know where the face is on the UV map.