Why am I misfiring

What is your question?

the battery has been losing charge recently. Last night I put the battery on charge. I realized this morning I charged it backwards. However, the battery had a good charge and all checks out well. Battery is good as well as the alternator. The alternator did have some corrosion. I've cleaned it and I am about to pull the spark plugs out(replaced them two weeks ago). If cleaning the connector on the alternator doesn't help what else could be the problem. No engine lights come on. When I turn they over and the car doesn't start the battery and oil light stay on