I got dogpiled for saying it, but Marketplace is remarkably unenshittified. It's bare bones internet from 2010. The worst thing about it is including ads, or annoyingly pushing you to mail items (where they can take a cut), but compared to the main social feed, it's much more focused on what you actually want.
That's why everyone uses it. If it were actually enshittified, there's plenty of competitors out there.
I tried one the other day, but it required a photo ID to sell, so I said naw to that.