Did not find the Honor 50 NTH-NX9
I would like to use it with an OS which doesn’t sell my data 
Matteo
No (re)sources - aka device_tree + kernel + vendor files - no party (that’s why it’s always better to check if those are publicly available BEFORE buying any Android device):
Anyway you can try GSI if bootloader is unlockable (refer to this XDA community section for more details).