You have to run a version of iOS compatible with jailbreaking, and know how to jailbreak. And then you have to maintain your likely tethered jailbreak that does

You have to run a version of iOS compatible with jailbreaking, and know how to jailbreak. And then you have to maintain your likely tethered jailbreak that doesn't persist through reboots. And accept that you'll never get any security updates, even for major vulnerabilities. Sounds like a lot of hoop jumping and a lot of caveats. Even I, a pretty tech-savvy individual, wouldn't want to bother with that on my primary phone. Let alone ask a non-technical friend or family member to do so.