They have an embarrassing POV on China, much like many Western CPs and can be dogmatic oftentimes. Still, they are currently the most significant Marxist association/party in Greece and their views are valid on other topics.
They have my critical support for lack of a better and more realistic alternative for Greece.
This is what capitalism wants you to feel, so that you can sell your labour for less. Don't give up. Take up a hobby, participate in a club or charity, learn a new language, socialise more, do anything to give you a purpose. A job isn't a purpose, it is just a means to it. So focus on things which make you happy and keep looking for a job opportunity.
I know people who also have a good education but struggle to find a good job in this economy, so this is pretty normal. Even living in your parents household is commonplace, since not many can afford their own housing. Believe me, there are a lot of people out there in the exact same situation.
The Internationale and the Workers' Marseillaise cone to mind. Also if your country has a tradition with social-political songs I advise you to look there.
What you should do: a few days before you set the deleted flag to your account, clear all the data fields that can be empty, and change the ones that cannot be empty. Change them to contain only nonsense. Everything. Your name, your password etc.
I doubt this would make much sense since they probably store older revisions of (most) data. You yourself said hard disks are cheap.
Does an elephant care about an ant?
Does Meta care about a string in the licence of a software used in four or five of the thousands of websites it shamelessly scrapes?
Unfortunately I don't think so.
Actually there is a certain small "party" in Greece, Anasintaxi, which calls itself Stalinist. Not only that, but it insists that all Marxist-Leninist parties should instead call themselves Stalinist. Publishes a crigey newspaper/blog.
DDG AI can certainly be helpful when you arrive at a deadlock (e.g. when stuck with a strange error while debugging a program), but I wouldn't trust use it in stead of search, both due to needlessly excessive resource usage and trustworthiness issues.
And then they wonder why mass shootings are such a common occurrence