Plant based/vegan meal prep, help appreciated!

Sorry for the long post, I talk/write too much. Short version: I would like some input/tips about how to plan out my meals, or what to cook, maybe even recipe suggestions using the ingredients I list below. I eat plant based, so no eggs or dairy, and no meat.

I've made a lot of progress the last 7 months in several different ways. I've finally started exercising (and I'm enjoying it), I've finished my education, and now I also have a job that pays well, and I'm currently looking for an apartment so that I can get my privacy back. However, I've gotten worse with food. I wasn't good to begin with, but now I hardly ever make anything myself. I'm tired when I get home from work, often hungry as well. Breakfast is the only meal I put some effort into, but it's turned into an endless cycle of toast and hot chocolate. For the past 2 months, everything is junk food, frozen ready-food, and sandwiches.

I want to stop buying ready made meals. Ofc it might be necessary at times, but I want to really try to cook my food myself, bake my own bread etc.

So far the plan I got is to make Sundays my meal-prep day. I know I want to make bread, hummus or similar and probably some sort of baked beans, maybe burgers made out of beans or peas, probably prep quinoa or buckwheat so that I can just scoop it up and add veggies and burgers/baked beans etc to it.
I've noticed that the stores have started to sell bags of food that is about to get tossed for a cheap price, often including large bags of bananas which I could chop up and freeze and make a smoothie out of every morning or evening. I have also considered having overnight oats since that's simple enough, and I could have bananas in that as well.

The items I'll have at home/be willing to buy and bring home:

• Black, white and fava beans, green and yellow peas, sugar snap peas. Red, green, and black lentils.
• Quinoa, buckwheat.
• Potatoes, carrots, sunroots, red beats.
• Yellow and red onion, leek, garlic.
• Tomato, bell pepper, aubergine, zucchini, cucumber.
• Kale, red cabbage, fennel, spinach.
• Mushrooms of different sorts, but probably mostly the button mushroom that I can find in stores all year around.
• Apples, pears, berries of different sort. Apples, oranges, and bananas are probably what I can most easily get hold of all year around.
• Chili, ginger, horseradish.
• Salt, black table pepper, cardamom, cinnamon, clove, rosemary, basil, thyme, coriander, oregano, sage, parsley, tarragon.
• Mustard, vinegar, olive oil, coconut oil, rapeseed oil, flour, yeast, sugar, cocoa powder, oat milk. Probably some sort of ready-made broth.
• Seeds and nuts of different sorts.

Any suggestions on what I could make that's easy, tasty and nutritious with the ingredients listed above? Is there any ingredient that you think I should definitely add to my list that would improve it? The reason I've made a list is because I got a bad habit of buying food and never using it, letting it go bad in the fridge. I'm done wasting food that way, so no more exotic ingredients that I don't understand.