You are still missing the issue, which is, is God able to provide additional evidence that would cause more people to love and accept him? If the answer is "yes," then God is deliberately preventing more people from accepting him. I have had lots of debates about this issue before. Since very few Christians will claim that God is not able to provide additional evidence that would convince more people to love and accept him, they eventually have to end up claiming that might makes right, which Romans chapter 9 seems to say, or that God can do whatever he wants to do, or that God is perfect. Of course, such claims are very difficult to reasonably prove.
I am sure that you know that the skeptics that you are having discussions with do not believe that the God of the Bible exists, and are just having some discussions with you about God for the sake of argument. What you need is evidence that the God of the Bible exists.
I cannot imagine a God who considers the spreading of the Gospel message to be very important, but refuses to ever do it himself. In addition, I cannot imagine a God who wants Christians to give food to hungry people, but refuses for give food directly to people himself. If the God of the Bible does not exist, that easily explains those situations. If he does exist, there are not any reaonsable explanations for those things. You can take guesses, but that is all that they would be.
The Bible threatens people with punishment, but never clearly states what the punishment will be, and if the punishment will be forever without parole. That doesn't sound like a moral God to me.
One thing that all of the Gods of all religions have in common is that they never show up, tangibly, in person, in order to eliminate lots of confusion. The fact that they never show up suggests that either naturalism is true, or a God exists who does not have any interest in verbally communicating with humans, or communicating with them with writings. Logically, deism, or naturalism, are the best choices for worldviews. In my opinion, a loving God would judge people, if at all, by their works, not by their beliefs.