Please, folks, "go back my home" is not proper English! "I'm going home." (most natural) "I'm going back to my home." (fully correct, be it somewhat redundant perhaps) "I'm going back home." (like 1; also used in a more literary context of things like going back to your birthplace, your parents' old home, your alma mater, etc. Or dying even. You could use 1 to express such sentiment too, but not 2)

you could say i am going back to my home or I am going home. both would be correct :)

go back my home

go backe to about go and another verb : go +to+inf. go + inf.+ing

i'm going back to my home or i'm going back home