The internet is full of perfectly good fashion advice -- a search for fashion tips + your body type or + the relevant social scene will work. There is very little bad fashion advice out there. For whatever reason it is not a topic that people enjoy writing about when they don't know what they're talking about. At worst you'll be told to never do something only to later realize you can get away with it. "They're more like guidelines anyway."

I'm not sure what to do about lack of individualized feedback-- it is important. I find that receive feedback on what I'm wearing routinely, though I that is probably something that happens on social, not professional occasions. I suppose one requirement must be friends who notice what I'm wearing. Gender of your social circle is relevant-- women are more likely to comment and more likely to comment positively; men are likely to make fun of me if I wear something really stupid looking. I believe there are online forums where people post photos of themselves to receive feedback on their fashion (there are a few subreddits, r/malefashionadvice for instance). That's probably easier than finding new friends. If you have money fashion and wardrobe consultants can work wonders.