eBay used to be my default for buying items, but a gradual shift to not seeing true sellers and more cheap trash posts from traders so stopped using really. Coupled with the rise of FB Marketplace and Vinted, I’d say 90% of the stuff Iused to buy I now buy elsewhere.
Selling was more of a pain, x% to ebay, x% stolen by paypal when FB Marketplace is free.
As others have said, theyve got to do something to turn the tide, must have been losing users in droves.