(I'm answering all responses, as long as it looks like you actually fully read my question. If this is too long for you, don't waste your time, as I won't consider responses that have nothing to do with what I've said here.)
1. Immigrants coming into their country illegally
Was it right for white people in the past to claim ownership of land from Native Americans, Africans, Australian Aborgines, Indians, etc? If you're white and live in the Americas, Australia, or any other colonized country, do you see that as okay, as those other groups didn't have immigration laws, even though land was forcefully taken away from them? Even if you live in Europe, many European countries benefited from their colonies, so it has affected you positively.
Also, what made Europeans move out of Europe in the first place? In a country like America, many Europeans came who were facing persecution in Europe, to pursue a better life. If you can be sympathetic to that, why can't you be sympathetic to Mexicans coming here, because their life is so horrible in Mexico they have to resort to coming here illegally, because it takes too long and/or is too expensive for them to get a visa/citizenship, and they want to make a better life for themselves and their children? We don't hear about Canadians coming here illegally, and that is because Canada's economy is much better. Don't hate the immigrants, hate what led them to make that decision, Mexico being in a wreck. It doesn't matter how hard we try to secure the border, it will just make people more inventive. It's similar to the drug war, and the prohibition = failures. with such a huge demand for something, no matter how much work is done to stop it, it will still happen. Instead of wasting all this money on the border, we should be trying to fix Mexico if we truly care about illegal immigrants in America. It's also important to America because it's right next to us, not far away, across the Atlantic. Improve Mexico, and America gets directly improved
2. Immigrants come and don't try to learn to speak the official language
Did Europeans try to learn the languages of the places they colonized, or did they continue speaking their European languages that were natural to them? Why is English Nigeria's national language? Why is Portuguese Brazil's national language? Why does most of South America in general speak Spanish, when Native American languages were original? Why isn't the Australian national language an Aboriginal language?
3. Immigrants don't try to join our culture, they just stick with theirs
Is it wrong for white South Africans to still be influenced by European culture, even though that's how they were brought up? No. People often move to different countries for economic purposes, not because they want to completely abandon everything about the way they lived in the past, essentially, their very nature. And as long as you have a marketable skill, you will be successful, whether you adopt the culture of the nation you live in or not. In America, that is called freedom of choice, and if you're proud to be an American, you respect one of America's founding ideals. If someone only chooses to know Spanish and can't find a job because of it, that is their choice. But at the same time, there are people who want to learn English but can't afford it, but come to America anyways, because they still want to find a way to put food on the table
4.They choose come here, and yet complain about the country
Maybe because as a whole, minorities don't get the same benefits that people of the majority get. The law may say so, but in reality there is still a lot of inequality in this world. Why should they, or anyone else, be okay with that? And, using America as an example again, since when is it un American to complain about the status quo? America was founded by people who hated the status quo, and wanted to separate from England. The American ideal is to pursue a more perfect union, even if it means breaking the status quo. It's one of the reasons why America has so many entrepreneurs, so many inventors patenting their original ideas. The only way to make a more perfect union is by challenging the status quo
IN CONCLUSION, why should white people expect new immigrants to do things that their ancestors didn't? Why do they even get mad that other people want to move to their country, when their ancestors thought it would be better to immigrate to a different country as well? Even if they didn't and you still live in Europe, there's a good chance your country has benefited from colonization. So unless you think colonization as a whole was wrong, and think white people shouldn't have moved to the Americas, Australia, etc. in the past, you can't truly say you hate immigration. Heck, technically, nobody can say they hate immigration unless they an

