Most "fashion advice" is catered to either rich people looking to waste money, or midwesterners white collar workers trying to fit in at the office.
But if you go out in public, no one dresses like that. They're wearing a lot of canvas, denim and plaid, lots of face piercings and tattoos, hoodies and beanies. On the fancier end, you'll see oversized flannel jackers and dad sneakers. On older people it's a lot of carhartt and Patagonia.
Out in the suburbs younger people wear athleisure, and older people wear cargo shorts and t shirts.
But when you look at style guides it's like "your guide to chinos and blazers" but only the most obnoxious finance and tech bros wear that shit.
Where do you find style guides for normal people?
Style guides are made for people who want to dress "well" but don't know how, and typically men. For that specific case, the /r/MFA chinos, OCBD, and Clark's Desert Boots uniform is often the shortest path to accomplishing that.
What you want is lookbooks and inspiration albums. I've heard pinterest is very good for this but haven't used it myself. Google "[style] inspo" and see what comes up. Find a notable figure with a style you like and note what they do. Follow Instagram accounts. People watch in places with people you want to match the vibe of.