[aggressor_eg]

Would you please help to solve this issue in my car

my BMW X5 2009 has Low Oil Pressure warning in the dashboard, the RPM is not stable and fluctuating, also the motor performance is significantly degraded.

I flushed the OIL however this issue not solved.
I did online research and some threads mentioned something about changing the crankshaft sensor, I'm not sure if this will fix the issue?

I did an OBD scan I got the below error code:

VIN retrieved from Vehicle
VIN: WBAFE81099L095076
Make:BMW Year:2009
----Confirmed Trouble Codes Scan Report----
4 Confirmed Trouble Codes Trouble Codes:
1. P0019
Crankshaft Position - Camshaft Position Correlation Bank 2 Sensor B
2. P0302
Cylinder 2 Misfire Detected
3. P0300
Random/Multiple Cylinder Misfire Detected
4. P0303
Cylinder 3 Misfire Detected