I have been vegan for a year and never felt better and have more nutrients and iron than before when I was just veggie. Confirmed by blood test.
I have the vegan a-z supplement from boots.
I start the day with a protein shake. I vary what's in it but the bare basics are banana, raw spinach, oat milk and protein powder from Holland and Barrett (pulsin).
You need to eat nuts / nut butter every day. I also eat avocado and chia seeds for healthy fats.
I eat tofu, tempeh, lentils, beans and quinoa. I eat a lot of vegetables.
Aldi do a good vegan range and Sainsbury's vegan pesto is delicious.
I add nutritional yeast (Sainsbury's again) to cooking / sauces.
Amanda ducks on YouTube is brilliant.
I'm happy to answer any questions. You get criticism for being vegan because it's different and people don't understand but it really is the healthiest way to be imo.