I wonder if anyone has tried to install either Ubuntu or Sailfish or maybe that /e/ thing on this phone, or at least a similar one, cuz pretty soon it is going to get pushed to android 11, and that creeps me out.
The main problem is that Nokia does not provide a way to unlock the bootloader on the Nokia 6.1. The official website only allows to unlock the bootloader on the Nokia 8, if I am not mistaken:
Some say that you can pay to get a third party to unlock your bootloader, but personally I would not go that route (for obvious security and privacy considerations).