People who disagree with the good Cardinal should either become Catholic/Orthodox or else get out of chrstianity altogether and become Jews or Noachides. I recommend the latter.
Well, you don’t have to “become” anything except saved. Being saved is knowing and believing (trust in, rely upon, adhere to) in who Yeshua was and what He has done for us. Jesus tells us that those who love Him keep his commandments.
I love Him and rely upon Him that I may not sin against God.