How Can I Improve My PC Case Cooling Without Endless Heat?

Hey everyone! I recently built my own PC and everything is running smoothly, but I've noticed that the case gets really hot and it's radiating a lot of heat. I'm sitting close to it, and I'm starting to feel like I'm next to a radiator! For reference, I'm using a 7800x3d processor with a Phantom Spirit 120 ARGB cooler and a 5070 dual fan setup. My CPU temp stays around 85 degrees under load, while the GPU is maxing out at 72 degrees, even during long sessions. But with summer in full swing, my legs are burning up! I'm considering adding two more exhaust fans on top, bringing my total to a 3x3 intake/exhaust setup. I'm currently using the stock fans from my MATX Montech Air 100 ARGB case. Would adding more fans create a negative pressure situation, or would it actually help redirect the heat? Any ideas for improving this hot situation would be much appreciated!