I have to confess that I don't quite understand what you are meaning by that. If what you want is a certificate for bithouz.com and *.bithouz.com, that is any subdomain such as foo.bithouz.com, baz.bithouz.com, engage.bithouz.com, develop.bithouz.com, and so on, yes a wildcard certificate will do that. A wildcard certificate is ideal for a developer wanting to sell personal sites under its own site. It's also better if you want to secure different IP addresses under the same domain.
OTOH if you know that you will probably not need other names that the ones you said in your post and that they are all classic subdomains (ie using SNI) on a single server, a wildcard certificate is a bit more complex than a vanilla HTTP-01 (using WEB protocol to declare each server separately)
First of all, you will not be able to use the simpler certbot.auto. You will have to either use third party software, or use a packaged certbot for your distro, using a PPA for example for Ubuntu, a 'solution' that can cause trouble sometimes.
Then you will have to interact with your DNS server. Something that may be possible - there are a lot of plugins for different provides -but you will have probably to get an API key from your provider and configure your ACME software to use it. Sometimes providers are fast and competent and can help newbies, sometimes less so.
When stuff is complex, it's difficult to get both at the same time....if the how to is easy to understand for a non specialist, that's because it skips the bad stuff.