What I eat and would recommend:
Breakfast:
Oats, seeds, vegan milk, fruit and nut butter ( I basically only ever eat this for breakfast it's so nice lol). I'd rlly recommend trying cashew butter of almond butter if you don't like peanut butter.
cereal and toast. There is a rlly nice vegan cereal called maple sunrise, would recommend.
vegan yoghurt with granola/muesli, fruit and seeds.
Lunch:
hummus or tahini sandwich with spinach, tomato and cucumber with a side of carrots and a piece of fruit.
Alternatively, something like avocado on toast with the same sides or a sweet potato with a legume like chickpeas, vegetables, hummus or tahini and some nutritional yeast.
Sometimes I have a baked sweet potato (microwaved for about 5 mins) with a tablespoon or two of plain vegan yoghurt, peanut butter, fruit, and seeds.
Snack options:
fruit and nuts.
nakd bar
vegan yoghurt
lentil/ hummus crips (although I don't like crisps personally)
crackers with nut butter or hummus.
some vegan biscuits?
Banana nicecream: a blended frozen banana with vegan milk, a splash of maple syrup, chia seeds and blueberries.
Dates
hot chocolate e.g. the normal cadbury one is vegan and some whittards ones are. Sometimes I make my own e.g. with date syrup, unsweetened cocoa/cacao powder, spices and vegan milk.
Dinner:
A grain, like rice/quinoa/couscous with a legume e.g. pinto/kidney/haricot beans or chickpeas with vegetables, tahini/hummus and nutritional yeast.
other options;
vegetarian bolognese made with tinned chopped tomatoes, vegetables like grated carrot, mushrooms, spinach etc, olives, lentils and pasta.
Hope this helps. I'm not the most inventive, but occasionally I might make something like a vegetable curry or a sweet potato and vegetable stew served with a pitta bread.