there is no such thing as the Mandela affect. You just don't have a perfect memory.
The example you give of the prayer, the "Our Father' is a terrible one. This prayer varies from the KJV protestant Bible to the English Catholic Bible and various protestant, Eastern Orthodox and Coptic translations.
Notice how in your clip he says 'Art in heaven' not 'Are in heaven'? The part about debtors, that is not the Catholic Lord's Prayer. That is the Anglican or Episcopal version from the KJV. Below are KJV and Catholic (in Italic) versions. I've bolded where they diverge;

Our Father which art in heaven, Hallowed be thy name.

Our Father, Who art in Heaven, hallowed be Thy name;

Thy kingdom come, Thy will be done in earth, as it is in heaven.

Thy Kingdom come, Thy will be done on earth as it is in Heaven.

Give us this day our daily bread.

Give us this day our daily bread;

And forgive us our debts, as we forgive our debtors.

and forgive us our trespasses as we forgive those who trespass against us;

And lead us not into temptation, but deliver us from evil: For thine is the kingdom, and the power, and the glory, for ever. Amen.

and lead us not into temptation, but deliver us from evil. Amen.