nope
don’t paste things in to folders that you don’t know about (generally a bad idea)
The CSR folder is CSRs that certbot has generated
Did you read the documentation by any chance as this is fairly well covered
examples of how to run these commands: Tutorial - Java KeyStores (JKS) With Let's Encrypt
certonly:
Options for modifying how a certificate is obtained
–csr CSR Path to a Certificate Signing Request (CSR) in DER or
PEM format. Currently --csr only works with the
’certonly’ subcommand. (default: None)
Andrei