I no longer carry any cash with me at all, unless there is a specific need for actual cash - but it is more bother than it is worth. I was sold on the use of cards combined with a pin, just as soon as it became common and I was sold on it even more, once contactless arrived. The final stage was for contactless to appear on my phone, so no need to even carry my wallet, so long as I had my phone with me and much more secure than cards in my wallet.
I tend to buy a fair bit online, where it is easier for them to maintain a larger range, for things like shoes and trousers. Shoes I take either a wide fit, or the next size up - I can order the wide fit in the correct size. Trousers I can buy, with the correct waist and length. Both would normally involve visiting lots of shops, or accepting a poor compromise.
I have yet to be convinced by online food ordering, I have always gone to the shop, inspected and bought. A few weeks ago, planning a trip to Iceland (the supermarket) I tried browsing their online pages for ideas - I found it an hopeless website. I tend to go there to stock up on good quality frozen ready meals. A few years ago they had a really good selection, but now they seem to have dropped the better quality meals completely, none at all even in their stores.
Good quality meat and fish, is bought face to face, from local specialist shops.