For the things that are not yet known, scientists can have theories, which are not random speculation but based on at least some scientific data. They will never claim that those things are necessarily the "truth" unless they are certain about them. Contrast that approach with the approach of religion, where they declare that they have the truth for everything without any basis. This is why science has proven religion wrong in countless occasions.
Nonsense! Had God needed a creator then we would end up with an infinite loop of creators!
That is exactly what happens if you say that everything that exists needs a creator. So that kind of logic needs to be abandoned. When you accept that something can exist without a creator then you don't need anything "higher" to give birth to our universe. You add God in there just because you want to, not because there is a logic that requires it.
What we *can* surmise though is that some force made it happen… and it’s that very force that we label as “God”!
Most people don't think of "God" as just some force that set of the initial "bang". Most people associate God with having human like emotions: Loving, caring, just, being able to see and listen, to communicate with us etc. And then they also believe that this "God" has all sorts of other powers for anything that we can imagine.
Gravity is a "force". If you keep something and you let it go that thing will move on its own and hit the ground due to the gravity force. Gravity keeps us on the ground, it keeps the moon around earth, makes the planets orbit around our sun, is what keeps our galaxy and all other galaxies together. And yet Gravity is no God. Not even a little one. It doesn't have any supernatural powers, it doesn't have feelings it is a "just" a force.
So even if we accept your unproven theory that some force was required to get things going, it still wouldn't make that force a God. It would be just a force.