@sun manosphere people used to have some good stats on this. The stats generally are interesting. E.g. the divorce rates have been declining but so have the marriage rates (likely meaning that only people who are more confident in their ability to maintain a marriage are getting married).

various factors like number of sexual partners and intelligence/education can be used to predict divorce likelihood

>Many like to bring up the statistic that 50% of divorces end in divorce as evidence that humans (and in particular women as they initiate them in modern countries) are not meant to practice monogamy, however amongst first marriages only 35% of marriages end in divorce.[25][26][27]
>The reason why the divorce rate taken as a whole comes out at 50% is because a minority of r-strategists whom continuously divorce and remarry which means that the rate increases as a result.
https://incels.wiki/w/Marriage#Divorce