This is the "Nuclear Option." It involves creating a bootable USB drive with a different operating system (like a lightweight Linux distro such as GalliumOS or Ubuntu) and booting the Chromebook from that USB instead of the internal drive.
Before trying to break the operating system, the first and most reliable method is often the most overlooked: how to download apps on chromebook when blocked
★★★★☆ Difficulty: Medium Risk: Medium This is the "Nuclear Option
This is the most powerful legal workaround. Modern Chromebooks excel at Progressive Web Apps—websites that function identically to native apps. They can be installed directly from the Chrome browser, bypassing the Play Store entirely. Importantly, most school and corporate network filters do not block PWAs because they are served over standard HTTPS (port 443). bypassing the Play Store entirely. Importantly