I did not know the sims was so hard

I played it as a kid and I have no idea how I survived. I'm used to cheating my needs and the sims has no cheat for needs. I feel like constantly have to keep the sim happy, because she is depressed the whole, have to use the bathroom all the time and sleep all the time. I tried using the move_objects on cheat but whenever my sim reappears she loses all progress I made. I've been trying to make her a celebrity but whenever she reappears she loses her stars.