Formal:
* Bonne chance et bonne santé: This is the most literal translation and is appropriate for formal settings.
* Je vous souhaite bonne chance et bonne santé: This is slightly more formal and adds a personal touch.
Informal:
* Bonne chance et prends soin de toi: This is a more casual way to say "good luck and take care of yourself".
* Bon courage et bonne santé: This means "good courage and good health" and is a good option for someone facing a challenge.
* Bon courage et à bientôt: This means "good luck and see you soon."
You can also use a combination of these phrases, depending on your preference. For example, you could say:
* Bonne chance et prenez soin de vous.
* Je vous souhaite bon courage et bonne santé.
Ultimately, the best way to say "good luck and be well" in French is to choose a phrase that feels natural and appropriate for the situation.