You can always cheat. If it makes it easier buy prepared veg that you just have to finish.
I also agree to put veg with everything. I use the steam fresh stuff. Don’t forget that if there’s anything you can cook like mash potatoes/root veg mash to always make extra and freeze in portions.
You can also buy frozen berries to add to plain yogurt. Just take out a portion an hour before you want to add to the yogurt. Turns it a lovely colour and tasty.
I shop at Morrisons and cheat all the time. Not because I can’t cook, but I’m time poor. I like cooking, but not a purist and do anything to make life easier.
Examples:
Tray of ready to cook Mediterranean veg, once cooked I blitz with a tin of tomatoes for a pasta sauce. You could add extra veg, like fresh sliced mushrooms or chopped sweet potatoes (you can buy frozen) and that becomes a tomato sauce for everything. I use it for bolognaise, chilli, meatballs, pizza base sauce (just buy bases ready made) or on its own with fresh pasta.
With the chilli we have it with rice or put it in a wrap with some salad from
a bag, pre grated cheese and Val it a burrito. Generally we’ve with corn on the cob cooked in the microwave.
Linda McCartney veggie sausages, ready made root veg mash, gravy and peas.
Something on toast a beans, spaghetti, scrambled egg (do on the hob, low heat and keep mixing), mushrooms.
Soups are really easy too and can be batch cooked for the freezer.
I’d start small with the life hacks and then become comfortable to practice other things.
Don’t beat yourself up :)