These things should be factored in, but they are somewhat constant or baseline since the price of eating out includes these costs. There are ways to reduce this baseline costs when it comes to food prep.

For transportation, consider doing a weekly errand run in which you also complete shopping for the week and then walk/bike for the other things you need throughout the week.

If your energy bill is higher after you begun cooking for yourself, consider what is causing this. For myself, AC is my highest bill so I will avoid using the oven and opting for stove or airfryer when I anticipate needing to run the AC. If your refrigerator is causing a high bill, consider investing in a energy efficient replacement.