@mrfriendly8181Well, I have a series about that, actually called "Country Boy, City Girl". And a lot of it is about the "fish out of water" feeling as he moves from rural Idaho to Los Angeles.
However, it is a very long series. Four books so far, a fifth in the works, and 10 short stories. And yes, most of what you describe is in it. Income disparity, not sure if his relationships will survive, and ups and downs.
https://storiesonline.net/series/1519/country-boy-city-girl
But the first 4 "books" are complete. The short stories are mostly vignettes told by other people but in the same "universe". Sometimes even the same event, from a different point of view. The newest "book" actually starts about 20 years after the first, and involves a different main character.