Don't feel bad op, plenty of people only learn to cook when they have children.
For the moment though, there's some really easy changes you could make:
Breakfast - weetabix and a banana is good and super easy. I'd get rid of the fruit pots and just give fruit, it doesn't need to be mushed at her age.
Lunch - Babies love sandwiches generally. Of course they pull them apart, eat the filling and then suck the bread, but that's fine. Cheese, ham, mashed avocado or banana or peanut butter (once she's 1yr old) are all great.
Dinner - eggs are very quick and easy and a great source of protein. Scrambled eggs, some veg sticks and toast, and you have a balanced meal. Decent fish fingers are fine, just make sure they're the fish fillet ones and keep an eye on the salt.
As far as snacks go, I'd try to avoid sweet stuff apart from fruit. So maybe crackers, breadsticks, veg and hummus, oatcakes and hummus (hummus is great stuff and babies love it ime), cheese cubes.
And teach yourself to cook simple things you can batch cook and stick in the freezer - bolognaise, fish pie, that sort of thing. Loads and loads of recipes online.