IMO there are sufficient search engines to find products in online shops, to check availability, compare prices etc.
I see the main selling point of Amazon in the huge assortment (you can get everything in one place without shipping fees), the user ratings (although the quality massively declined during the last years) and the fast delivery. I’m boycotting them for around one year now and everytime I need to order a strange combination of things I’m getting reminded how convenient it used to be. I don’t intend to order there again, but I definitely need much longer to buy stuff now.
You only listed things she doesn’t wan’t to do with you. Are there other activities she enjoys doing together and do you enjoy these things as well? Like do you hang out with each other in person / at home or is she avoiding contact in general? Would you both enjoy to intensify these kind of activities? Are you both intested to find new activities that you can both find fulfillment together in like hiking, sewing, reading etc.?