One thing, we the people can do, is pressure our politicians to break up Google along with the rest of big tech.
There are many primary challengers this cycle that are running anti-monopoly platforms. Help their cause, signing pointless petitions is just West Wing style fantasy that is extremely childish.
Google will not change their minds, they're too busy buying goodwill from governments by playing along. There aren't any real alternatives to Android that are less closed off and they know it.