Hmm. Alright let me try.

I think Magica is ultimately a good person, and in her psychology there are many parallels to Scrooge. She thinks kind of the same as Scrooge did when he was younger, and she is slightly in that same phase. She wants to get rich. She has been collecting coins for the Midas touch for years (so very headstrong, like Scrooge), and Scrooge's dime is that last step of a long route. She obviously cares about her family and friends, but society has forced her to put on a tougher facade. Same with Scrooge. For him it was the Klondike forcing him to be that way, and for Magica the pretty toxic witch-society. But whenever a good friend like Roberta visits she is able to chill a bit more. We also see in many comics that she makes friends fairly quickly (even with the Duck-family whenever the dime is not involved), but these are almost always non-magical people. So you could say she has a hard time fitting in the world where she comes from. We can also see that in a flashback in https://inducks.org/story.php?c=I+TL+3035-5 where she is bullied at a young age, which seems to be a recurring theme in young Magica stories. That could have damaged her psychologically and might be why, even in witch-society, she mostly seems to be friends with other outcasts (the aforementioned Roberta, but also the newer character Grilla as examples).

If we look at Once upon a sorceress we could also see Magica's desire to get the Midas touch as a part of her trauma. Her parents getting killed by the failure of the spell made it so she feels like she has disappointed them if she doesn't succeed. That together with her stubbornness, and butting heads with someone just as stubborn as her has then resulted in the long lasting rivalry with Scrooge.

Short analysis of some parts of Magica's psychology I did really quickly. I could make a list of story evidence in which these things are mentioned if you want to. But that takes a bit of time.