There are other social benefits unrelated to employement (for example for kids from poor families, etc), but in principle - yes.

Now it's not so bad, you can find a job if you really want (it might be bad, but it's there). In 90s we had 20% unemployment and almost no social benefits. It was rough.

It's almost never the case. The way welfare works is kind of...buggy.

You accept a job, do it for a couple of days, and that's it.

Quite literally, yes.