Disclaimer: This post is written purely for educational and exploratory purposes, and as a personal technical record. The method described — submitting data to Google Forms via a custom HTML form — is not officially supported by Google, may stop working without notice, and should not be relied on for production use or sensitive data collection. I do not encourage or endorse misuse, automation of fake submissions, or attempts to bypass login-restricted forms. Please use responsibly and at your own discretion.