Putting aside the insanity of building homes next to pumpjacks, it looks like you have way, way too much oil specialization.

This confirms my suspicion that you overzoned your industry, leading worker shortages. You might be better off bulldozing half of this to fix the problem. I recommend you check your Outside Connections info view often as that shows you what resources your city is importing and exporting. If you're importing a lot of wood, build more mills. If you're exporting a lot of agriculture, cut back on farming. Resources that are extracted, processed, manufactured and sold
within the city maximises tax income. As a tip, you should assign keyboard shortcuts to your info view to make them easier to check frequently.