I'm Muslim by identity, but atheist agnostic by heart. I was confused about my faith throughout my teenage years, but now at least I know about my own religious identity. I think that whether God exist or not might be dependent on what you define as God itself.
I don't believe God exists, if the definition of God is based on the religions that exist now (more or less an all-powerful sentient being that is kind of narcissistic by human standards)
But I believe in God on a more loose term. A 'matter' that encompasses the universe. I mean, by this definition, God may well be just a particle of sorts that doesn't even have a consciousness. I'm not very knowledgeable in this area so I can only guess. When I say I 'believe', I don't mean I have utmost faith like religious people do. It goes more in line with 'it's more probable that God exist than not'. Again, it's based on the definition. I know, this might not make a sense to other people