I’ve been vegan for almost a year, so I can help you a lot.
If you ever want to spoil yourself try Chao cheese. The price depends on your area.
I don’t know if you have any allergies, but here are some random mainly vegetable meals, so you don’t have to pay for mock meats which are extremely expensive like you said.
Nachos. I use black beans, mushrooms, jalapenos, salsa, and vegan sour cream.
You could make cauliflower chicken wings if you aren’t allergic to cauliflower.
Loaded potatoes.
Spiralized vegetables for pasta.
A black bean burger.
Carrots fries also.
Look at Hot For Food for the Cauliflower Chicken Wings. Also Tasty for the Black Bean Burger.
If you want me ideas you can feel free to pm me.