When comparing the Frum divorce rate to the non-Jewish rate it’s minuscule. Over 50% of non Jewish marriages end in divorce. This doesn’t take into consideration the thousands of couples that don’t even get married.
As to why the divorce rate is increasing this is due to the fact we are accustom to instant gratification and when we don’t get it we discard the item. I get to see a lot of Shidduch resumes and see a trend of couples getting divorced during pregnancy. These children will grow up never really having a relationship with their father. While there is a requirement for driver education there is no requirement for marriage education. The only education given is in regard to ritual (family) purity with no training on conflict resolution.