You're man of the house? The Provider and Protector? The spiritual leader?

Than take a stand. Your 8-year-old does not need an electronic device for Christmas. If you model doomscrolling then it's gonna be hard to sell that idea, lol. But leaders sell ideas. Children should reverence their parents; don't get in their way. And don't be a pushover.

Also your porn use is going to infect them.