It bangs very loud while steering??????

Hello my Audi has been banging for a few weeks. It comes when I’m driving backwards and hitting like when I’m driving forward. Every time I turn the steering wheel back in basic position it pops up loudly and I even spit it out. The blow (slamming) is very loud and it feels like it’s getting worse! What’s new: Dom Bearings Springs Shock Absorbers Coupling Rods Rod Holders Track Rod Heads I don’t know where it comes from. It only comes when it’s steering or steering back on both sides. The car is lowered AP Springs Sports Shock Absorber