> Arranged marriages worked for generations.

Existed, sure. Whether they “work” or not is... well, for most of history no one was gathering data, but arranged marriage still exists now, and there is evidence linking it to higher rates of suicide, for women particularly.

Do you have some links? The stuff I found was just correlated, but also had other major issues listed too, like domestic violence.

There's a big statistical problem here--these days the things shown to relate to a relationship "working" are basically reasons not to dissolve failed relationships. Lots of couples stay together but are basically financially-linked roommates.