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Whether or not it’s possible to jailbreak your device, depends on the software version installed on it. If it’s iOS 12 or later, you can’t jailbreak it, and it’s also not possible to downgrade to a iOS version prior to 12 - Apple doesn’t sign those any more.
There are a few versions before iOS 12 that can be jailbroken. Here’s a tutorial for jailbreaking with Electra:
How To Jailbreak iOS 11.3.1 Using Electra On Any iPhone, iPad Or iPod touch [Tutorial]
Hope that helps.