How do I cope with no job security driving for an app?

You drive strangers for a company that can switch you off without warning or explanation, and under the word freedom there is no real security to stand on. That fear is completely reasonable. Building your income on ground that could vanish overnight is a genuinely unstable place to be. The danger is real, so meet it with clear eyes instead of dread. You cannot make the app fair or promise it will never deactivate you. What you can do is refuse to be fully dependent on something that could drop you. Anything you build on top of that could-vanish ground needs its own foundation underneath it. Build that foundation now, while you are still earning. Set aside a cushion of savings so a sudden deactivation is a setback, not a catastrophe. Keep a second income or a growing skill in motion so this app is never your only door. Protect your rating and your record, since that is the part in your hands. You may not be able to make this job secure. You can make yourself harder to sink. Start with one month's cushion and build from there.