I can understand that you believe in 1 only God (That's my faith too).But I can't understand why you don't belong to any religion since the holy books are from God and believing in them as being so is believing in God.I'm Muslim and proud to be,so I only believe in 1 God who is Allah and I believe in the Holy Quran and in our Prophet Muhammad peace and prayer be upon him,I also believe that other holy books got unfortunately falsified.

Among many books have read the holy Quarn aswell, i remember that it was written that everybody who believes in god is technically a muslim as muslim means devoted to god.
Al-Tabiri (d.923) interpreted the word ‘Islam’ as meaning ‘submission to God’, a notion that can be collectively applied.

However, sadly, there are many people who call themselves christans, muslims and so on but they dont act like god wants us to act. They act against the obvious will of the almighty god while harming and mutilating innocent children on purpose, kill and poison innocent people, act ruthless in a devestating way out of greend and hungryness for power and so on. These people were distracted by satan and it is pathetic, but in the end god will judge them.
So while i was atheistic for a long time, i found my path to god on my own, by doing research, without beeing active in any community, this is one of the reasons why it makes no sense to count me to a "specific religion". There is only one religion, the submission to god the almighty, the creator of the earth and the heaven.

May he bless us all with his infinite love and power!