While driving my 02 spectra it drops rpm and shakes if i hit gas petal but wont gas up either what is wrong nothing shows on computer diagnostics

That sounds like either a fuel issue; too rich, or an air leak in the manifold.
If it were an ignition issue, it woukd cut out, not run rough.

Is your check engine light on ? Fuel comp. is fuel system monitor test complete , along with HO2 , misfire , cat, etc... Nothing wrong ! OBD Readiness Monitors Explained OBD Auto Doctor Scantool Garage

Computers rarely fail. The diagnostic would not show anything wrong unless a trouble code is set UNLESS the diagnostic used live data vieew. Most shops dont do that . So at what RPM does it not die? How many miles are on it? Ford uses something called an idle air speed motor. They are prone to fouling.

the smoke came from the spilled oil leaking onto a hot surface ( manifold) No problem there. The oil light coming on was probably from the oil surging away from the oil pickup in the sump momentarily allowed the oil pump to suck air hence a drop in oil pressure. To have all that happen, the hit on the curd was substantial. so I thinking bent axle flange and broken engine mounts could explain vibrations and engine shaking

ARE YOU SO GREEDY

go to the test with scanner and computer for exactly diagnostic, otherwise you must waste time and money.
God bless you

Try a new fuel filter, and have your fuel pressure checked. Also , check for any stored diagnostic codes, in your engine computer.

maf, 02, computer, vacuum leaks,coolant and air temp sensors. Generally when nothing can be found wrong thru a professional diagnostic approach and the 02 has over 50,000 miles on it we recommend replacing the upstream 02 senor. But first one needs a diagnostic data scanner to make sure all the other sensors are within parameters.

check the idle, it is too low will stall when you are driving, just need to adjust the idle and make it a little faster only

Try checking the snorkel tube between the air cleaner and the intake. Open the hood, and have a friend try to rev the engine, and watch the tube...my '92's was collapsing and starving the engine, couldn't get more than 3500-4000 rpm. Could also be a fuel pump problem like low pressure or bad line.