I wish I had more than one upvote. If you have no management experience, and no mentorship in managing, you have no business managing people. Managing requires empathy and a desire to help your subordinates level up, not SWE skills. Your job is to deliver value to the org and to your individual contributors in equal parts.

At least as a software developer, you're only breaking code. But you start affecting people's lives, emotional well being, and career paths when you're a manager, and I find it rare where a manager understands this.