How could I backup or restore my device if it is soft bricked? Not sure if I have wha

So I want to modify some .jars and tinker with my phone though I am afraid that it will become soft bricked or worse, and I need some advice before I try any of it. Is there an emulator that could emulate my Rom on my pc to test whether it would get bricked? My rom is stock rooted android 4.4 with Kyocera. Or is there a program to backup to my pc and restore from a bricked phone? If anyone has information on this I'd appreciate it. Thanks!

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