Is Let’s Encrypt with EasyEngine Auto-renewal or do we need to manually renew it?

Thank you so much for writing a detailed and precise response.

2 hours back, I discvered this link : https://easyengine.io/docs/lets-encrypt/

and then used this code to add crone job to already installed ssl certificate:

ee site update mydomain.com --letsencrypt

and it worked.

I will check it again with the crone job commands that you have written above.

Thank you so much