Is it fine if we say Allah is enough for me as a best friend and I don't need anyone else when the Prophet Muhammad SAW also had friends?
You shouldn't really say He the Almighty is your "best friend", rather to acknowledge that only He will always be there for you literally forever and knows what is best for you. He is your creator, and that is why you worship Him. i understand your intentions and where you are heading, but the wordings are wrong. You do need friends in this world, and you certainly need family, and it is a duty of a muslim to keep good ties with their neighbours, family and friends.