#responsibility

My children are having tantrums when having to do something they don't want to do.

I need tips on how to deal with “don’t want to go to school today” or “don't want to go to sports, I'm tired' tantrums.
All they want to do (both of them) is stay on the couch, play Roblox or Minecraft.
How to convince them without threatening or forcing them to go?