If they aren’t in the recycle bin, it must have been a hard delete. Check the downloads tab on your browser. It has a history list of your downloads, segregated datewise. The download link will also be there. You can click on it and re-download it. The link should be active since you paid for it. You can restore the system too but if you have recently downloaded any other stuff, you’ll lose those. You’ll have to manually select files that don’t need delete during system restore….but that could be too much work.