Honestly your reaction is very understandable. You tried to legitimately improve things, go the extra mile and they treated you badly for it.

But ultimately that’s not how it goes in many places.

There are a lot of people who care more about their craft than their ego. And this can be enriching beyond compensation.

I'll second this. There are a lot of good managers that care more about the product than some team metrics. Same for coworkers that care about improving. Don't let one bad manager define how you'll do things in your next job.

Likewise, plenty of people who care about the customers and their coworkers as well. Collaboration with such a teams is where it’s at.

In my experience such situations are transitory though and a time comes to move on (gracefully and maintaining accountability for one’s own actions).