I try to stick to the healthier ranges but I do need to up the fruit and veg a bit as it's usually just the odd apple, banana or tangerine. Can't see me ever bothering to cook to be honest. It just seem too much effort and faff with all the ingredients you seem to need for any recipe I've looked at.
Mo........a slow cooker is cheap.
You need maybe 6-8
spices** (which are cheap).
Lamb, chicken, beef or a load of veg. Throw some spices in.....easy peasy

.
A packet of easy cook rice or spag.
So many easy recipes available.
**it can seem daunting as there are so many but you can easily narrow it down.
Go for it Mo.