So you are imagining that the universe is like a balloon and inside all the matter and energy condenses over one side then goes big bang expanding out over to the opposite side condensing once more?Inside our sphere the Big Bang happened on one side of a sphere once it does all galaxies Stars clouds of gas all move all the way around to the other side where they Collide and at one point where become so compacted and dense that they exploded outward going to start the same cycle it once did before which we call the big bang
Its can be a good thing to use analogies to imagine how something works but often (at least when it comes to spacetime) those analogies don't really physically match reality. Balloon analogies and membranes analogies are often used by scientists to try and visually explain to the lay person what the math and physics are predicting.
There is nothing crazy about your idea, and quite a few think along the similar lines for the universe model you have imagined. The next step would be to read what you can on the current models of the universe then try and imagine how or if your idea could be plausible. See if your model is compatible with the data already known or proven sound, then go from there.it's a crazy idea but I bet a thousand of other people thought the same thing but I'm free for any other ideas that people have for me so feel free to tell me your thoughts for i always think up crazy things as such. I was typing so fast that there were so many ears that when i read it i almost crapped myself