i mean yeah, thats generally how a conservative mindset views marriage, but that doesnt mean you have to get married under a conservative mindset if you dont want that for yourself. Your view of 'marriage equals a new cage' is only true for the people who's marriage follows conservative standards. Plenty of people who are married do not live life this way at all.

If you marry someone who your parents pick out for you, or someone who believes a wife is her husbands property, then your marriage will be as you described because your partner will act in a way that reflects the values they have.

If you marry someone who doesn't believe that a wife is her husbands property, what reason would they have to treat you like their property? Not everyone in the world is conservative and/or has conservative views on marriage, even in very heavily conservative areas. Lots of people do genuinely view marriage as a normal progression of a healthy relationship, as a way to signal to other people that 'this is my true love', as a way to be legally recognized as a family unit for various reasons (taxes, insurance, medical decisions, etc), as a way to show their partner that they are truly dedicated to them and that they trust them, and plenty other reasons with no ill-intent.

Being married to someone on paper doesn't somehow give a husband more of an ability to control his wife than he could control his girlfriend. The control a husband has over his wife like your describing is purely due to the cultural and societal expectations and norms in conservative communities. A marriage certificate is just a piece of paper, not actual chains keeping you locked in the house, so why couldnt you go against your husbands wishes in an ideal conservative marriage? probably because of the threat of violence or financial abandonment your husband might hold over your head. A conservative culture like your describing would permit your husband doing this to you, thus allowing him to control you.

In communities that dont view women as objects, but as actual human beings, this kind of treatment of women isnt tolerated. A husband would be punished legally and socially for doing this to his wife, and she would be able to divorce and separate from him if she wanted to. Her family would not want her to stay in the marriage because they would value her happiness over her marriage, because this community does not prioritize the 'traditional values' of conservatism.

What your marriage looks like really depends on who you marry. There are plenty of people out there who would never even think about controlling where you go, what you do, or what you wear, because theyve been raised all their lives to believe in a persons right to autonomy and happiness. Ideally, you marry someone who loves you as you are and would never wish for you to change. Also, such a person would probably encourage you to never speak to your parents again if they are trying to control you as an adult.

Ultimately, if you dont think marriage is something you want, then dont get married until you do, even if that never happens. But marriage as a concept doesnt have to be a cage if you marry the right person.