What to do?

I'm govt.servent married for more than 3 yrs with a sofware engg.girl & we have a girl child,ours is not happy marriage from the 1st month of solemnity,when I found out that my wife is not taking marriage seriously n lying to me in every possible way, I found it very difficult to come to terms,since then I've only questioned my wife for lying to me & not answering me then n there in any situation almost all my questions get answered after asking for 10 times n loosing cool,hence we ended fighting on numerous occasions, for which I feel guilty,whenever such fights happened my wife ran to her parents n blocked my n my family's numbers (in 1st yr of our marriage) this happened 3/4 times, as usual her n my parents also see me as culprit,nobody asked her to ccooperateor take married life seriously, be responsible for own actions,always it's me who have to be matured in our relationship after 1& half yrs later she conceived & before 1st nationwide lockdown we became parents of a beautiful girl,since the birth of baby our fights reduced but arguments remained, misunderstanding & not accepting each other's thoughts remains, I as husband n father have to do all the adjustments n sacrifice to run the house smoothly is only fact which was constant,since our last argument which happened a month ago my mother in law interfered between us by which I lost my cool n ended fighting (verbally of course) with her to which my wife reacted by not contacting me n any of my family members friends and even our own child for last 1 month,I feel bad for the baby who is jst 1& half yrs old,I tried contacting her mobile but initially she'd blocked me n she refused to answer by not responding to my calls n msgs, my mother in law threatened me on that day of filing a domestic violence case and made some derogatory remarks on my looks n education, I'm not a person who believes in breaking things,but now my personal life is on line of breaking badly,and I'm afraid if I let my baby with my wife,as per my knowledge and how much I know my in laws they won't let me meet n talk with my baby,& by such feelings I'm having nervous breakdown & I can't concentrate on my job & daily routines, plz I beg u all who's reading this kindly help me,my wife n in laws knows I don't want to break the marriage so they are not responding n not allowing my wife either to make calls to baby also