Help me understand?

For context, I'm a Diaspora Indian woman of 41 years. I really want to understand the Indian marriage situation. In my country, ethnic Indians marry for love, there's no dowry, live separately from parents, DILS don't give their jewellery to MILs etc. I want to understand why such things still persist in India. The Indian women that I meet when I travel to India are super well- educated with great careers. Why do you all still pay dowry for a guy to marry you? Why do you agree to marry total strangers who treat you like shit? Why do you put up with these crazy MILs and SILs when you get married? Why do you find it difficult to cut off from these toxic people? Why do you not leave your husbands when they treat you like shit? So many questions! Is not better to stay single than marry into craziness? Why choose to do these things? Are you being forced to marry 😭😭😭 What's happening ladies? You're so much better than this?!