My mom (68F ) not listening about my decisions

My mom (68F) wants me (27F ) to study for MBA when I already completed my msc computer science and unemployed from 2023. I was begging her to join me for digital marketing course without MBA degree from 2020 ( I found few colleges give MBA with digital marketing and few only give mba alone . I hate maths) . She started to become wall whenever I say with details about digital marketing course units and the exam details

I am not asking this for career advice. I noticed some things whenever she sees alliance profiles in WhatsApp - she read only the groom name, his job details, no horoscope, no viewing about his pictures and even no background checking about groom. She and my dad (70M ) says , " Why ask check for background when his bio data pdf so good? "

My parents advice me to not to ask about groom's finance ( my parents are not asking in conversation with groom parents. I found one of grooms had unimaginable loan) , not to ask whether the groom guy also know the house chores like cooking , cleaning etc ( when his parents directly asking me the same question ) some will do say this is normal. I felt uncomfortable with it.

How to make my parents listen to me, When my yelling also not working to my parents? Is it normal ?