Currently, certbot and nginx are used to create a trusted webpage. Recently, an attempt was made to move the images to a kubernetes cluster on google cloud platform. A guide was found to configure an SSL loadbalancer. It was tried and it shows multiple textboxes to insert a key, cert and chain.
An attempt was made to see whether Google offers wildcard certs as well, but no information was found. Certbot itself announced last year that they will support wildcard certs, but that does not seem to be the case as well. First impression is that using certbot in the google loadbalancer will not be possible or will be cumbersome as the certs have to be renewed every three months.
When one Googles:
cheap wildcard ssl then a lot of results are shown. The questions are which of these providers can be considered as safe, what are the costs and what providers do you use and why?