Linux+Gnu has become a great solution for opting out of the mainstream non-free operating systems, but unfortunately the biggest issue with privacy/security turns out to be phones, these days. So the real battle for personal privacy/control over one's digital life has kind of moved to an arena where linux has to date not offered a compelling alternative.
Does anyone have experience with the librem 5 phone? See link below. The site says it has been shipping since Sep 19 or so so I guess there must be users: