Routing/Sit down issue on several interactions

routing/sitdown issue                -playing on xbox seriesX

This problem appears a lot to me.

  (For example : my parent-Sim "loved" to take the Baby-toddler and walk all the way down ! through the house just to sit  on the sun lounger outside. The Sims did this as a general-routine , ignoring every order i gave to them.)

Right now i suffer from a routing/sitdown/'will the sim finally use the bike?'. Problem ...                                          Brightchester Uni-campus.      My Sims have to reach the class in time ... It doesn't matter if i give the order ''go here" , the Sim allways choose the bike ! but before this : She make a few steps to the frontdoor, turn around to sit down on the sofa, stand up , go to the front door, turn around , go back to sit down on the sofa again , till she finally get on her bike (still standing in the livingroom !! 🤣🤔) and ride to her class (... and obviously she will be too late-again 😒).               ... It's amazing ! She always sit down 2 ! times ...

I would be really very gratefull to get rid of this  .       ✌️