Fashion Troubles

I’m having issues finding good dress clothes for my office job where outfits can range from jeans/polo to full on suits. The most I’ve ever dressed up was khakis and a polo for church growing up. I’ve worn a suit but only for the occasional wedding or funeral.

1. where can I find decent dress clothes that aren’t going to destroy my wallet? One of my issues is idk how people afford to wear different suits or dress outfits everyday with a new pair of shoes everyday. I’d like to try out a blazer, maybe, but I also don’t want to spend $300 on one.

2. where do I find decent outfit ideas and feel comfortable wearing it?