Dotenv file not giving variables NextJS

Im trying nextjs and i have encountered a problem. My path is like this

In connectToMongo my variable is coming

But when in Main/index.tsx my process.env is empty object

I also have problem when i push files to github .env file pushing too but i added it to .gitignore
My key is right, but dotenv is not seeing it
I tried to add

dotenv.config({path: '.env'})

But it not helped me

When you are using Next.js, you don't need dotenv package. Next.js automatically imports the environment variables from .env or .env.local files. Also, only the variables with NEXT_PUBLIC prefix will be available on client side.