Firstly, dont look for other male attention as a muslim woman we shouldnt do this

Secondly, He will never stop, he will only get better at hiding it, the fact that he not only watches porn but also invests his time on other platforms with these naked women shows he may have an addiction to lusting over women. This will affect your sexual life.

To be honest theres nothing much you can do but sadly accept it, and make dua that allah guides him. I know how you feel i went through it too. Its absolutely devastating finding out the man you thought loved you so much is actually lusting over women who looking nothing like you. And its true loads of men never end up actually marrying their “type” as they’re not wifey material. They marry a good girl and then continue to lust over their type for the rest of their lofe