How to Release MX Records from Google Workspace

Hi! My Google Workspace subscription has expired, and I do not wish to renew it. However, I am unable to modify the MX records for my domain, because it is still connected to Google Workspace.
I would like to set up Zoho Mail for my domain, but need the ability to modify the MX records to point to Zoho’s servers.
Could anyone guide me on how to release the MX records from Google Workspace ?