Does this post help? https://forums.docker.com/t/docker-change-default-ip-range-for-all-and-new-containers/144474/8
If you change the bridge ip in /etc/docker/daemon.json (create the file if it doesn’t exist), make sure to stop the docker engine, remove the default bridge and docker0 interface, before restarting the docker engine again. It should re-create the interface and default bridge network.