You can't blame covid for the pre-existing situations that you describe. People have had crappy jobs and been homeless long before covid came around. So you really need to be honest and break these people into two groups; those who were that way before, and those who find themselves that way now due to the govt shutdown of a great economy, the loss of their livelihoods, and all the rest that is associated with the libtard imposed covid restrictions.
And of course there isn't anything wrong with wanting your life to be better, to have a better paying job, to have a nice warm home so you won't freeze to death on the streets.
For those that find themselves in that situation due to covid, I believe the govt has already spent trillions of dollars trying to help them. I get it though, on an individual basis, what was received might not have been enough. Maybe something reasonable can be done to help them.
Regardless of how people find themselves in the situations you describe, what is wrong is not doing anything about it other than whining about it, and expecting others (especially the govt) to lift you out of your situation, when you should be at least working on doing that for yourself.
There are numerous ways to do it. I did, so I know it can be done. No, I wasn't homeless, but I damn near was. I was living in a dumpy apartment in a very bad part of town, barely making rent most months, but not all months. I had massive debt, including student loan debt and of course credit card debt. My old beater car was falling apart and I couldn't; afford to fix it. I was having to sell off most of my personal property of any value, just to have enough money to eat and make rent.
And it never once crossed my mind to make the govt or anyone else responsible for getting me out of that situation. And this was back when I was routinely voting Democrat! The only assistance I sought or received was unemployment insurance. And that's insurance, not a grant. So yes, I had to pay taxes on the money I received as unemployment insurance.
So no, people are not selfish nor entitled for being sick of their lives, covid or not. But they need to do something about it themselves. Here's a slightly modified version of a quote from Dr. Hunter S. Thompson: call on the govt but row away from the rocks.