You are touching a totally different debate, F22 program has been abandoned a long time ago. It was an extremely expensive program after producing 100 or 122 , they stopped the production. All plane info is not on the net, we have some basic info. It is hard to discuss this plane specs. But some stealth info is available .
The F-22’s exhaust is designed to reduce rear Radar as well as IR signature’s. Thats why they changed it to a rectangle to give it more area and profile for the heat to dissipate. The engines rear is covered by fuselage projections into the rear to reduce signature from an angle in the rear side. The thrust will hit its own body if it moves to sides. The vertical a.k.a pitch direction was the only axis left to move. For the lateral direction, the pilots are trained to roll the aircraft first then pull back to achieve the same result. Hope you understand, its design
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Check the engine design , if you see the difference ... this engine is built for extreme menveoribility at high speed.
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And look at this one , the most famous and use in all Russian and Chinese frontline.
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