My wife left my house with my son

My name is Sangamesh originally from Sakleshpur. but in Living in Bangalore. I was married in 2013 & we had a boy child in 2014. due to financial pressure & as I was doing a simple job, after years of hard work, I got to go to the Singapore to pursue a higher studies for 3 years. My wife was staying with my parents. as I left for abroad when my son was only 2 months old, my wife also joined the MSc food nutrition. while i was abroad, my wife was also studying her masters & my parents took care of my son since he was 2 months old. Until 2018, I could not take my parents & my wife abroad, as I was a student & did not have much money. We took a loan that my father & mother, who were both retired teachers, were paying loan & sponsored my education aboard. I got a job in 2019 & I visited India 3 times since 2017. since I was on probation & saving money for our new house loan in India, my wife, after her MSc, also decided to join a job & she has been working since 2017. After covid, in 2020, lost my job, but with luck i got another job in 2021 in Norway, a low position as a biotech research. In 2020, My wife decided to leave my parents home & took my son to Kolar & lived there & said, she will come back if i made a separate house for her & my. since then our conflict started & this led to mental torture as my son was facing schooling difficult & she would not send or come back if i dont buy or rent another house. So my parents helped me to buy a flat in 2022 & i took some loan as well. My wife returned & i asked her to contribute to loan. She threatened me that, if I ask a wife to pay she will file a case of dowry against me. At the same time, my father got ill with liver dysfunction with multiple surgeries. I requested my wife to take care, & she agreed would move in with my parents, but the new flat should be rented, & I must give her half the rent. I said ok. After a few months, when my father was recovering, she messaged me said she had taken my son & left the house & told I could not stay in your house & see my sick parents & asked to make the flat in her name or she will not come back. I came back & spent 3 months taking care of both my mom and dad, as they were sick and had recovered. it's been 2 years since she left, & I am paying 25k just for her well-being and not to hurt my son. She needs a divorce & one crore. ( in10 years, they never came abroad, as my father was sick, I new job, savings, conflict or pressure from wife, loan pressure was there). But I did everything of supporting study, paying my son's school fees, supporting parents, & finally, she is threatening to file cases on me if don’t pay1 crore. What are my mistakes? What remedies do I have for a marriage with 10 years and of which I spent 5 months every year with them. 2025 we wanted to go abroad. but now gone.