Do we return to God when we die?

Our spirit returns to God, yes, for continued refinement of character as we await a resurrection back to real life as physical humans.

No gods exist.  Hope that helps.

According to the Bible, the physical body cannot know or do anything. It rots in the grave (Ecclesiastes 9:5) but the spirit in it then returns to God who gave it (ch. 12). God requires an accounting for how the person lived in the body. That accounting happens on the still future Day of Judgment after resurrection bodies have been created, to 'clothe' those departed spirits in. Read Revelation ch. 20 for that. Ch. 6 shows some of those 'unclothed' spirits are under Heaven's altar, asking how long till their blood is avenged by God (as they died martyrs, some having been beheaded for their faith in God). They are given white robes to wear and told to wait till the full number of the martyrs has been arrived at.

We are the spirit children of God and our spirits existed before we were born. Death is the separation of our spirit from our body. After death, we live in the spirit world until the resurrection when all will be resurrected and return to God for judgement.

Watch this video: https://www.jw.org/finder?wtlocale=E&docid=502017858&srcid=share

Yes, that is what The Bible teaches.
At death only your flesh body dies, your soul and spirit live on in your Spiritual body.

1 Corinthians 15:44 "It is sown a natural body; it is raised a spiritual body. There is a natural body, and there is a spiritual body."

Ecclesiastes 12:7 "Then shall the dust return to the earth as it was: and the spirit shall return unto God who gave it.”

Genesis 3:19-In the sweat of your face you will eat bread* until you return to the ground, for out of it you were taken.+ For dust you are and to dust you will return.”

No, our spirits go to Paradise or to Hell to be purified, if necessary, and perfected as far as our works allow.

The Bible says: “The living are conscious that they will die; but as for the dead, they are conscious of nothing at all.” (Ecclesiastes 9:5; Psalm 146:4) Therefore, when we die, we cease to exist. The dead can’t think, act, or feel anything.

“To dust you will return”
God explained what happens when we die when he spoke to the first man, Adam. Because Adam was disobedient, God said to him: “Dust you are and to dust you will return.” (Genesis 3:19) Before God created Adam “out of dust from the ground,” Adam did not exist. (Genesis 2:7) Likewise, when Adam died, he returned to dust and ceased to exist.

The same thing happens to those who die now. Speaking of both humans and animals, the Bible says: “They have all come to be from the dust, and they are all returning to the dust.”​—Ecclesiastes 3:19, 20.

Death is not necessarily the end of everything
The Bible often compares death to sleep. (Psalm 13:3; John 11:11-14; Acts 7:60) A person who is fast asleep is unaware of what is happening around him. Likewise, the dead are not conscious of anything. Yet, the Bible teaches that God can awaken the dead as if from sleep and give them life again. (Job 14:13-15) For those whom God resurrects, death is not the end of everything.

Ecclesiastes 9:5 says: For the living know* that they will die, but the dead know nothing at all, nor do they have any more reward,* because all memory of them is forgotten.

When you die, you die. People who have died are unconscious. But one day God will bring people back to life. When on earth Jesus refers to death as “sleep”. When we are asleep we are unaware of our surroundings. But something can happen to wake us up like hearing a noise or a voice. When the resurrection happens those who are “asleep in death” will hear God’s voice and wake up, come back to life. Just as easy as it is for a noise to wake you up when sleeping. 

The brief article linked below will help answer the question of what happens when people die. And you can find many more articles there to answer any other questions you might have. It is so helpful!