Sorry, but I’m really not interested in trying to figure out what may be wrong with your car when I know your wheels are not properly balanced. So, have the wheels computer balanced and see if the problem still occurs.
Some years ago an auto repair shop was going out of business and their equipment was sold at auction. I was looking at their tire mounting and balancing machines and was sorely tempted. But the machines were too big for my little shop. So, DIY hardcore, and I am, I still have to pay to have my wheels balanced.