There are currently (like LineageOS or Pixel Experience) specifically built for the Nokia G300 . This is primarily because Nokia (HMD Global) generally keeps its bootloaders locked, making it difficult for independent developers to create and test custom software.
: If you eventually find a way to unlock the bootloader (via unofficial paid services or exploits), the nokia g300 custom rom
The gold standard. LineageOS offers a near-stock Android experience with incredible stability. For the G300, the unofficial builds maintain most hardware functions—Wi-Fi, Bluetooth, VoLTE, and audio usually work. Battery life is often superior to stock. There are currently (like LineageOS or Pixel Experience)
A locked bootloader is the primary obstacle. On the Nokia G300 A locked bootloader is the primary obstacle
If a bootloader unlock method is ever discovered, the G300 could potentially run a GSI, as it supports Project Treble
Since a custom ROM is unavailable, users looking to improve the device often turn to: