Is there an adjective meaning "someone who is asking for too much in an arrogant way"?

Entitled (adj): feeling that you have the right to do or have what you want without having to work for it or deserve it, just because of who you are:

Example: These kids are spoiled, entitled, self-absorbed, and apathetic.

— Cambridge English dictionary

An example use at Times.com

May 20, 2013 · I am about to do what old people have done throughout history: call those younger than me lazy, entitled, selfish and shallow. But I have studies! I ...

How about chutzpah. From Cambridge:

chutzpah: behavior that is extremely confident and often rude, with no respect for the opinions or abilities of anyone else

The situations you describe in your question are all good examples of chutzpah.

I like "brazen" but "inconsiderate" or "entitled" might also fit. Some people act as if they are "entitled" to every desire that crosses their minds.

Someone who is exploitative would behave in the way those four situations describe.
Lexico has

exploitative
ADJECTIVE

Making use of a situation or treating others unfairly in order to gain an advantage or benefit.

The details suggested a mean streak, an exploitive nature, a sloppy greediness, none of which seemed especially pleasant, let alone presidential.

The yogi forsakes stealing, lying, cheating, killing, and other exploitative and self-gratifying behaviours.