I've never had to return to AliExpress - if I've had an issue they (AliExpress) have just instantly refunded me without having to go through the seller(admittedly this is maybe 2 items in nearly 10 years).

Similar with Temu - my wife ordered some homeware that was awful and looked nothing like the pictures - Temu provided a pre-paid returns label for some of it, and the rest just refunded and said 'please donate locally'.

I forget the clothing company (wasn't Shein but similar) again same - she kept some, but most of it needed retuning - within minutes she had a refund and 'please keep or donate the unwanted clothing' - simpler than many UK companies returns policies.