I always buy in person if I can, even if it's slightly more expensive (I'm lucky that I don't needn't to watch every pound). I appreciate having shops and try to help keep them going. My main exception to this is books, which I generally buy for Kindle these days - though I've now discovered a gorgeous bookshop near me...
However, it's becoming more difficult.
White goods - rarely available in shops now. I do like to see what I'm getting, even if it's a washing machine.
Clothes - fewer shops, less stock, much seems aimed at teenagers. And it's so infuriating to be told there's a greater selection on the website. I tried to buy a top at John Lewis a little while ago. My size wasn't in the shop, which was listed as having 2 in stock, but staff couldn't find them. I'd have had to pay extra to do click and collect, so I didn't bother. And if I want anything particular, it's so much easier to find online, e.g. far more choice of colours. I recently bought a green fake leather jacket online - I tried several in the shops, but they weren't quite right in fit, and every single one was black.
Supermarkets - I've used supermarkets rather than small food shops for years as we don't have a great selection nearby, though I do use our corner shop. For speciality things like miso I still use small shops.
As for retail parks, if I'm out in the car and want something from Boots, say, it's easier and cheaper to stop off and pick it up at a retail park than to drive or take the bus into town. I do walk into town for a shopping expedition, but not just to get some shampoo.
DH is the opposite and probably contributes a huge percentage of Amazon's profits.