Played a few of the lego games with my kids, like avengers and Harry potter. They have heaps of save points and were easy enough for my 5yr old to get through but still fun for me as well.
Got a galaxy tab a9+ for my 4yr old son. Plays games and watches youtube and other streaming things no problem. Not so expensive that I would cry if he breaks it.
Played a few of the lego games with my kids, like avengers and Harry potter. They have heaps of save points and were easy enough for my 5yr old to get through but still fun for me as well.