My parents handled conflict by screaming at each other. It’s a pattern my mom learned from her parents, who were always fighting (owing largely to her father’s constant drinking, numerous affairs and inability to hold down steady employment).
I don’t think my mom knew how to live in a calm environment, so she’d create conflict. It’d start off as something petty: for example, she’d get jealous if another woman so much as spoke to dad (“who the fuck was that?” “Just a cashier.” “Why the fuck did she smile at you?” “I would assume they’re told to act friendly towards customers.”). Dad would, for his part, try to keep things from escalating, but mom would just keep at it and keep at it until she finally got a screaming match.
Yet, somehow, they stuck together. Married for 40 years before mom passed away. Luckily mom finally calmed down with age, and their last decade or so together was a relatively peaceful one.
Luckily, there’s not much conflict between my wife and I. Frankly, I wouldn’t stay together if there was. On those rare occasions when we do argue we both know how to walk away and cool off before things get too heated.