Why are children of immigrants much more conservative than their peers in the home country?

I seriously don't get it. Me myself like I grew up as a Christian in a very religious country and I hated it so much and even my peers hated it.

They regularly conducted retreats for kids where they literally tell Children that they shouldn't get an abortion in the future, or watch adult content, or not be LGBTQ and stuff. They used to show pictures of LGBT people and point and mock at them and I felt so disgusted but I knew I can't speak up as they are all against me and being LGBTQ is illegal here so if I speak up I might get arrested. Many other people with me back then also told me Im secret how disgusted they were by it.

Later I moved to Australia and I regularly see kids from the same Christian community but raised here , a country that obviously supports LGBTQ and I met the same kids from the chrisitain community but they grew up here and they were all like so proud of their Chrisitain culture and I was so shocked because I am an atheist and I loved western culture but these guys all seemed to want to go back to the 19th century.

It's always the kids of immigrants who do this. This is also prevalent in Muslim communities like in many actual Muslim countries like Iran and Turkey, the citizens hate the government and regularly choose to not wear the hijab and many are secretly athesit. Yet the Muslims in liberal countries like the UK are all becoming so extremist and I saw an interview by Pauline Hanson from Australia interviewing a Muslim community and the girls who are Australian citizens say how they support Sharia law.

Why is it always these entitled children of immigrants who live privileged lives that are doing this. Why is the developing and conservative world becoming more and more liberal like India, Iran, etc. but liberal and developed countries like UK, USA, the people are becoming more and more conservative like bruhhh.