I can't say I've quit clothes shopping but I am trying to be super-intentional about it. So - planning outfits and shopping only to fill gaps and replace trusted staples. TBH, staying online makes this easier to do, with the occasional foray into a shop to check out quality in person if a brand I'm not already familiar with has interested me online.
I don't want to buy secondhand, I'd rather buy new, good quality classics and make them last. A lot of my stuff is at least ten years old, the oldest item in my wardrobe is 20 years old (Gerard Darel soft linen/cotton mix 'denim' jacket). Things that have earned their keep come from Gerard Darel, MaxMara, Jaeger (before M&S), DVF, COS, Eric Bompard, Hobbes, Russell & Bromley, Adidas.
Occasionally, I need to scratch a 'really want something new to shake it up a bit', like I decide I want to wear jeans again after years of not being interested, and pair them with an oversized striped shirt. I think Massimo Dutti, COS, and sometimes Zara are good high street options for decent quality at reasonable prices. I only really know Uniqlo for their Heattech products, but I like those.
Like others on here, I"m circling Sezane (bags and shoes mostly, at the moment, but I also like the look of their trousers - I think they're quite a seventies outline, which is appealing), but they do seem to have a lot of polyester, so need to watch that. Frankie Shop is nice but the import taxes and postage stir extra costs in, so you have to be pretty sure to commit. A friend of mine had a good haul from the Agnes B sale recently, so that's another brand which I hadn't thought of in years.
Sometimes, though, I find that staples that have worked very well for a long time suddenly don't feel right, and this might be where trends make themselves count. Last night, I wore a midi skirt, quite full, with a polo jumper and jacket - all fine. But I had on a pair of sort of shoe-boots, slim, mid height heel, pointed toe and it really felt old-fashioned and prissy - sort of Victoria Beckham date night from several years back. Or something Kate Middleton might wear. Very not me, not now, anyway. I think what the outfit needed was a pair of block heeled high loafers - chunkier, squarer of toe, possibly a textured leather. So those will be going on my list to buy this year!