Translation of titles and permalinks to another language

Good morning all,

I have a website where all of my publications, posts were in English.
I decided to translate all the articles into French, ie: the content, the title and the permalink.
Only, I didn’t take into account that all permalinks in English will be 404 errors.
I would like to redirect all the old English permalinks which are currently in 404, to the articles which have been translated into French.

For example :

mysite.com/a-dog-runs-in-the-park
towards
mysite.com/un-chien-court-dans-le-parc

Thank you ??