Unknowingly uttering words of kufr
Q: I wanted to know what is the consequences of a Muslim who could have unknowingly left the fold of Islam. I uttered a sentence in the gym that said to an extent that there is other gods but I did not mean it in the context that it was said. I was alone in the gym when this happened. As soon as I mumbled those words and realised what I said, I immediately repented because I did not intend to say it, it just came out of my mouth. I'm extremely worried because what I have learned is that Allah doesn't forgive those who leave the fold of Islam. Please advise me because I love Islam and love Allah and the prophet Muhammad (Sallallahu Alayhi Wasallam).