One thing my parents nailed was their Pareto Principle approach towards clothing. (If flashy isn’t the goal, 20% of the effort gets 80% of the results.)
As a man, it’s easy to be decent — button-down shirt, slacks, and dark non-sneaker shoes. That should work for anything outside of a wedding, job interview, funeral, or legislative hearing. (It’s also the most comfortable way to dress.)
I blend in by making sure I’m not the most underdressed guy in the room. If in doubt, I’ve got a cheap sports coat stashed in the trunk of my car, and I slap on a tie. (Yuck…Tuck in that darn shirt…Double Yuck.)
I wear the clothes until they wear out, and then I wear them around the house until they fall apart. Then I thank the rags and move on to the next Costco special or hand-me-down. (I recently got a haul from my retired uncle.)
It’s not minimalism. (It’s a lot easier.)