I understand what you are saying.
Certainly I can make any claim I want, even if I cannot prove it to you.
To me this is a beautiful thing, since it requires others to find out for themselves.
You say you tried and got nothing, I say you did not try long enough nor sincerely enough BASED on what I experienced. This is not an insult NOR a judgment, I do not disbelieve how hard you tried. I recommend you try again, that you try harder and that you be completely-nothing-held-back sincere. Tell God you want to know, be so sincere that He can feel it. Imagine Him listening to you a little person on one of His MANY planets, that is what WE are.
He will respond through your doubts, He has time for you, He has time for all of us.
But be patient, it may take some time, it took me quite a while, it was one of the roughest things that I have ever accomplished.
I hope you will not give up and think that it is futile to try again, I have so much joy in my life I can't really express it to you, you are so precious to God it is mind blowing, when He answers your sincere request you WILL find that it was worth the exquisite effort.