Thank you for your question and pictures. I'm not sure what type of fertilizing/mowing schedule you have. Is this lawn damage extensive in your lawn, or just a few patches? I believe the problem is white grubs which causes browning and dying of lawn areas. Here's some information from Extension with pictures and ways to control white grubs:

White grub control in lawns | UMN Extension

White grubs threaten Minnesota lawns: identification and treatment tips | UMN Extension

Grubs will feed on your lawn roots and the turf will appear to be eaten and pulled up. Fungus invading lawns is obvious and you will see fruiting structures:

Common fungi in yards and gardens | UMN Extension

The only other possibility would be herbicide drift. If an herbicide was applied near you (do you live near a farm?), and it was somewhat windy, it would kill any turf it encounters. I would consult a lawn care professional to answer some of your questions and can directly observe your areas of damage. Good luck to you and your lawn.