Stolen baggage

Hello i am a belgian citizen, I choosed RJ to fly from brussels to cairo with my family booking reference MSFFLH (RJ142/RJ507) , My bagage has been opened during the flight and after the boarding and i have 2 things that has been stolen ( a new power bank anker 90€ + my new airpods pro 240€) during my flight This is the first time for me to have this issue with an air company. Its not acceptable at all , i would ask you to recompensate my stolen items during the flight