You might have to try a lot of different things before you know what you like. Nutritional yeast can be used kind of like a seasoning. You might like the flavour or you might dislike it. Personally, I like it, but I know many people who don't care for it. What general dishes do you like and what do you like about them? Fake meat has gotten a lot better in the past couple years, but, no matter how good they make it, it'll always be a fake version of a real thing. I try to stay away from those and cook vegetables to be vegetables. There are lots of vegetarian dishes that have been around for centuries - succotash, baba ganoush, ratatouille, pasta primavera, falafel, etc... are all typically vegetarian main course dishes that don't try to masquerade as something else. A lot of central and east Asian dishes are vegetarian by default as well. But you have to try to eat what you like, because if you don't like salad and try to simply live off of salad, you're just going to eventually give up on your diet. But personally, my top three vegetarian dishes are: 3. Masaman Curry (root vegetables and peanuts in a earthy spicy Thai sauce), 2. Misir Wat (slow-cooked lentils in a spicy tomato sauce - with Ethiopian seasonings), and 1. Chana Masala (curried garbonzo beans in a spicy tomato Indian gravy). But that's because I like spicy food.