Misfiring on cylinder two

Searched your site and found the following. I guess I will go find someone to give me repair estimates. It would not be so bad but I still owe on the darn thing. Have been faithful to perform scheduled maintenance for this car. Sad. I used to love Buick's, frustrating!

https://www.2carpros.com/articles/engine-vibration-at-idle
https://www.2carpros.com/articles/the-reasons-for-low-compression

Bad Intake or exhaust valve: Intake and exhaust valves are present in every combustion chamber in the engine's cylinder head. The valves seal against a valve seat which is pressed into the cylinder head. Each of these pieces is made of a hardened metal that is finely ground to create the seal. After time and usage, this seal can become worn and burnt creating leakage which allows the compression to escape. In this case, the cylinder head must be removed and a valve job performed.

Those vapors are supposed to get sucked out by the PCV system. That is the positive crankcase ventilation system which includes an inexpensive valve that should be replaced periodically. If you see that smoke while the engine is running, start with a new PCV valve.

or

Broken piston ring: If a particular cylinder piston ring breaks it will allow cylinder compression to leak outward into the crankcase. To check for this condition remove the oil fill cap when the engine is running and you will see a distinctive pulse of smoke forced outward from the inside of the engine. A compression test will be able to pinpoint which cylinder has malfunctioned and needs repair.

To tell if it is due to worn piston rings, your mechanic can do a "cylinder leakage" test. A compression test will identify any cylinders with low compression. A cylinder leakage test will tell you why it is low. There are four possible causes and four places to look. The causes are a leaking intake valve, a leaking exhaust valve, a leaking cylinder head gasket, and worn piston rings. The leakage test involves blowing compressed air into each cylinder, one at a time, and listening for where it comes out. If the piston rings are worn, you will hear the air hissing at the oil cap or dipstick tube.

or

Flat camshaft: The camshaft is responsible for opening the intake and exhaust valves. This is done by the camshaft lobe, one for every valve. When this lobe wears down it will not open the valve which will not allow the cylinder to take in air or allow exhaust gasses out of the cylinder resulting in low compression. This can be observed by removing the valve cover and turning the engine over to check the valve movement. When this problem occurs the camshaft must be replaced.

Great thanks for your reply and direction!

Wondrous knowledge indeed! Thanks!