That happened long time ago. I raised this in a post because i do find the recruiters are not behaving very professionally and engaging with candidates. 'Too much on their plate' or 'too many to manage' are sinply excuses imo. Who isnt very occupied with work? Everyone is equally busy  and dropping a simple email update to someone you have spoken to before shows the good work ethics and will definitely be remembered by the candidates (like i said they are all their potential clients in future). I guess it's a culture thing in recruitment field, and unfortunately it's not something i appreciate. By saying this, I myself are in the client facing role and have to constantly engage differently stakeholders at the same time.

To answer your ques if i have followed up the recruiter back then, yes i had (2-3 times) and still did not get any response (ghosted i guess). I even got my friend in the same company to help emailing the recruiter and still.....
I had also came across recruiters who never responded after speaking to me despite telling me that they would give m me an update the following week and then totally forgot abt it, i could not be bothered with those as well. If you cant action on something then do not ever say that you will give an update the following week when you are not actually meaning it, right?

I have also seen on linkedin posts about recruiters complaining abt candidates never responded to them or showed up during interviews - I LOL-ed at that cause it seems like a karma to them.

Already replied this question a few times along the way. In summary, company's policy