Good news: you can choose a ccTLD (.us, .eu, etc); they're run by national government (or their designated operator), and the national government has sovereign control over how it's run.
On the other hand, if you want to have a say in how other registries are run, then consider joining an at-large structure (ALS) local to you or the Non-Commercial Stakeholders Group: https://www.icann.org/resources/pages/civil-society
DNS etc can be run by third parties