2. Then there are options in the middle and top of the screen. Move the mouse up and the loading interface scheme will appear. There are three kinds: simple, modern and traditional. Choose one of the first two.
3. Then select Unlock all windows to drag the action bar, avatar pack bar and so on.
4. Save after adjustment.
Be careful not to take alt+f4 offline after the first time. Otherwise, the save will fail. This is the interface I adjusted