How do arranged marriages work when there is no love or attraction?

I know very little about marriages let alone relationships
I have seen people getting married without love in my country.
And they live together like they are a family.
They pretend to be good.
Especially in arranged marriages, women have to be in gender roles for much longer than in a love marriage.
I hate it because love is basically based on attraction, and I know for a fact that half of the women who are getting married aren't attracted to them one bit.
And many of them have some shit to cover up, and the unattractive one has to deal with adultery from time to time.
And for me the time bomb has started ticking.
I don't want to marry someone who doesn't love me for sure. I have made my image in my head that I am not lovable as I have never got in a relationship even if I have actively tried to.
So now it scares me that I'll be in that sex less, useless committed relationships only to find out she is also unhappy or cheating on me.
How do arranged marriages work when there is no love or attraction?
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