You may need a PC / laptop for this and not the app or mobil browser, those can be sometimes limited in their options and features. Use Chrome or Firefox both work well with eBay.
Then, on your Purchase History page, go top right to See Orders >> All, and from drop down menu there, you cann see purchase made from 2017 to today's date.
The further back you go the information may lessen but you will see basic details.
