Changed engine oil and overfilled it, my car now jerks sometimes?

Yep, I think this can be a coincidence and when you are feeling it is an engine misfire. I would replace the spark plugs and coils.

Here are two videos to show you how:

https://youtu.be/tdnB4jaGSig

And this generic guide can help walk you through the job:

https://www.2carpros.com/articles/how-to-change-spark-plugs

Recommended Spark Plug
DENSO made .................... K20HR-U11
NGK made .................... LFR6C-11

Torque .................... 18 Nm (13 lb-ft)
Gap .................... 1.0 - 1.46 mm (0.039 - 0.047 in)

Please let us know what happens.