There is no one set of motives that apply to all immigrants. But I think many come here with some contradictory emotions. They are leaving behind a failed nation and culture that does not provide them what they want. At the same time they feel resentment and envy toward people of white European descent who have established the nations so many want to escape to.
Some immigrants are dealing with pride in the failed cultures they left and resentment of the successful one they escaped to, and that can lead to some contradictory and irrational emotions and actions.
Yes, some do come here for the right reasons, and fit in well here. Then you look at states like Colorado where all the California immigrants have totally corrupted the government. Or look at Minneapolis and that Ilhan Omar, and Michigan with Rashida Talib.
France has No-Go zones. We’re getting that here with the Muslim enclaves (trying to think of that Michigan city), where they want to implement Sharia law. Then there’s all the MS-13 groups the Democraps have let in.