Yes, the latest posts are shown as default so it’s showing Previous first. Please go to ‘Appearance > Customize > Additional CSS’ and Paste the below Customize CSS code. We have changed the text ‘Previous to ‘Next and ‘Next to ‘Previous’ for you.
One question, I actually want to place the “Next” button on the right. On the first page, it should say “Next” on the right, and no button on the left. On the second slide, it should show next on the right and previous on the left. On the last slide, it should say previous on the left.
We checked that only ‘Next’ button is already showing on the first page. (https://peiranoconsulting.com/)
To show the Project Name as well, The theme code need to customize, It cannot be done through custom CSS code.