Bruh. Just create a .env file in root and add these credentials. And then run those usual NPM commands.
REACT_APP_PINATA_KEY = <YOUR_PINATA_KEY>
REACT_APP_PINATA_SECRET = <YOUR_PINATA_SECRET_KEY>
REACT_APP_ALCHEMY_KEY = <YOUR_ALCHEMY_KEY>
API_URL = <SAME_AS_THE_ABOVE_JUST_TOO_LAZY_TO_CHANGE_KEY_NAME>
PRIVATE_KEY = <METAMASK_PRIVATE_KEY>