How do you get meal variety?

First of all, I am a terrible cook. I have no clue how to season things. I tend to over cook things because I am worried I will undercook them. People say a crockpot is easy but everything I’ve made in a crockpot is seriously inedible. I get stressed doing multiple tasks at once. The whole thing is frustrating. I have to follow recipes exactly and it’s exhausting .

I live alone and when I cook I have a lot left over. I HATE eating the same meal over and over again. When I buy produce I have no clue what to do with it unless it is in a recipe. Produce will normally end up going bad and I waste a lot of food. I want to eat healthy fresh food but it seems impossible without eating the same food over and over or wasting produce.

I just don’t understand how people get meal variety and fresh food without wasting tons of food. What are the essential seasonings? What meals do you use? How is it even possible?

tldr: Terrible cook. Hate eating the same meals. Need recipes and ideas.

How do you get meal variety?