You probably have a rice cooker, right? If not get one, a nice one like a zojirushi. There are loads upon loads of tasty vegan dishes you can look up that take effort, but if you just put rice + lentils + tofu in a rice cooker with some spices you end up with a pretty tasty and extremely cheap & filling staple meal with essentially no effort. Also nice is learning how to make a basic salad dressing out of olive oil, dijon mustard, and apple cider vinegar (just experiment until you find the quantity and proportions you like) then mix it with some greens from those salad greens boxes you can buy at the grocery store.
Also you won't feel full for your first week or so not eating meat. I dealt with this by eating a shit ton of bread. This is 100% just your body being confused after getting a central meaty component in every meal though so you'll adjust and start feeling full from eating vegan food.