Buy a laptop with MacOs or Linux operating system, this will meet all your needs and simply keep most of the games away, it is also easier to have an eye on the things your children do with that computer.
Use a Linux operating system is by far the most practical way of keeping the games and undesired video from children, although it requires parents to learn a little bit the advanced functions.
我用Andriod Pad加上family link app. 我情況係完全唔介意小朋友睇YouTube kid,但係每天對住部Pad最多兩小時。 Family link app 就啱曬心水,只係set好每天可使用的時間最多為兩小時,所以小朋友要明白,佢用盡時間去睇片就無時間做功課。在九月開學時我都要不停咁提佢要做曬功課先好睇片。