iTunes or Music will show a list in ascending or descending order as you choose, and you can sort on different column headings. A playlist copied to the device will be shown in playlist order, ascending. So you need to get the list in iTunes or Music sorted the way that you want it, and then copy that order to playlist order, and if the list is currently in descending order you need to reverse that. Use the songs view for the list. Right-click the playlist name and click Copy to Play Order to ensure the current order is captured. Reveal the current play order by clicking the heading of the left most column of numbers if not already selected and click the triangle at the top to put in ascending order if needed. Now see if the order is what you want, or upside down. If it is upside down, reverse the order with the triangle at the top of the sort column, copy to play order, then reverse once more. The triangle should now be pointing up, and the list should be in the order you want. Sync.
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