Is there any movements to make citizen's smartphones safe for owner from Google or Apple despite using some apps from their application stores? Are there any cars w/o proprietary software except of some cars w/o computers? How does that happened?
Some operating systems try to limit the amount of such malware-like things software can do while still allowing the useful functionality. Currently iOS seems to be the best popular option to run proprietary “apps” due to its easy to use permission model and good defaults.
I bought it in the first place to do 2fa, which works.
I don't use it any more than I do my old dumb phone.
Why would you do anything other than take calls or texts on a phone?
As for desktops/laptops, there are no safe operating systems suitable for use on the internet. Contrary to your opinion, Linux isn't safe, neither is Windows, MacOS, iOS or Android. Nothing supports capability based security. Nothing will be safe until it's in widespread use. The fact it was invented in the 1970s and remains largely unknown is proof we're on the worst timeline.