Where to buy stocks of well-known companies ??

Hi everyone. He wants to start his adventure on the traditional stock market and invest in well-known companies and companies such as Amazon, Apple or Mc'Donalds. Can someone guide me where to set up such an account to easily and safely buy my first shares? I would also like to add that I am not interested in those bucket racks that offer CFD trading. Thanks to everyone for the hints. Regards