Is eBay still the go-to?

I've been shopping for a few items (vintage sweaters, denim jackets, etc. - probably not important) but it's a bit overwhelming with all this stuff like eBay, Depop, Grailed, Vinted, Poshmark, TRR etc etc etc. Do most of y'all just main eBay these days? I assume there are exceptions of course. For instance, correct me if I'm wrong, I 'm guessing there are more dupes on eBay than other outlets.