Husband rights over wives dominancy

My arrange marriage is 6 yrs old. I hv a baby of 4 yrs. My wife always favours her dominancy over me. Her lifestyle is more levis and luxurious than me and I often afford for her. But now as a defence personnel my salary is limited and whatever I gave him , she is gifting to her yonger bro saying he is in much need and she will not take it back. Once twice I accepted but now a days is not acceptable. When I question now she is harassing me by recording my voice and giving her false statements to make her side strong. I don't want anything from her mayka but she is taking for her lifestyle inspite of that I fulfill as per my pocket. But now she is telling me greedy/ ghatia...and threatening me by telling I will do suicide and blame you. I will make you guilty in eyes of mayke wale. I will never go to ur home. Now see what can I do? Blablabla.. Actually she is border line personality by nature as told by counsellor. My position is that ki duty se aao bahar khana khao, no sweat space inside home. I want to know if I left her for ever, what maintenance cost I hv to bear as already purchased a plot on my name. In-hand salary is just 15000/- pm after emi. She often talks to go to women cell and complain for domestic violence whereas my God knows ki who is sufferer here. I am fully depressed now. This behaviour repeats every 5-6 months. Many time I decided to finish myself but due to baby love and as a elder brother of my family and old aged mother father, I denied but I want anyone who can teach her marriage dignity, husband's rights, think before talk..etc. O Lord help me today m got vaccinated of covid full body with heart is in pain noone asked for my lunch too.