Think what you’re saying here is engine pressure ratio, or EPR. Ratio across the entire engine, not at a particular location, or station. The speed of the air doesn’t change that much after hitting the inlet and first stage of the compressor. A series of blades do accelerate the air then the air passes through a set of stators which are divergent ducts which slow the air converting that energy into pressure. This happens across multiple stages. At the end of the compressor is a diffuser which acts like an extra special stator. Air is at the highest pressure here. On a large modern engine it could be 800psig and over 1000F. This is simplified, there are things that need done with a compressor to get it working across the operating range.