They don’t have tablets. My oldest has my old phone with everything blocked except a GBA emulator, music, and some educational games recommended by their teachers. They have a couple switch lites and we have one TV with Disney+, Netflix, and Youtube. I set up Youtube Kids profiles for them with whitelists so they can only watch channels I have specifically chosen for them. I don’t limit screen time, though. They don’t actually spend that much time watching TV or playing video games, and I’m pretty much always there with them when they do so I can talk with them about what they are watching or playing. I know it’s not the same for every kid but mine really don’t get sucked into screens. I’ve never been strict about it, even when they were babies. They usually can’t even finish a movie without getting bored and going to play outside or with actual toys.
We all have adhd so I thought screens would be a bigger challenge. I guess I got lucky.