The FairPhone comes with stock Android, but you can easily unlock the bootloader and install a different ROM. Some that I know are available for the FairPhone 4 are LineageOS, CalyxOS, iodéOS and /e/OS. With all of these you can achieve a certain level of degoogling and privacy.
Many people will recommend you GrapheneOS, which is unfortunately only available on Google Pixel devices.
The FairPhone comes with stock Android, but you can easily unlock the bootloader and install a different ROM. Some that I know are available for the FairPhone 4 are LineageOS, CalyxOS, iodéOS and /e/OS. With all of these you can achieve a certain level of degoogling and privacy.
Many people will recommend you GrapheneOS, which is unfortunately only available on Google Pixel devices.