Thank you for sharing that frustrating outcome. You can read in the article below why voting in districts is really bad: the elected representatives tend to be of a lower quality than the representatives picked in Proportional Voting.

Yet the better news still is that we can start changing our demeaning duopoly today. It's just at the local level, where separate-but-equal is illegally put in place, but that can be the start to changing more. Change the lower levels, and the higher levels will follow.

https://fred-rick.medium.com/why-is-district-voting-so-bad-2e30155cad2e

At the bottom of the linked article, you can read what can be done today to put your city on notification.