I am positive i am strong morale is good matuidi posts update after coronavirus diagnosis

It seems like you're referring to Blaise Matuidi, a French professional footballer who plays for Juventus and the France national team.

On March 12, 2020, Matuidi posted an update on his Instagram account after testing positive for COVID-19. Here's a translation of his post:

"I wanted to share with you all that I've just been diagnosed with COVID-19. I'm doing well, my morale is good, and I'm strong. I'm following the instructions of the health authorities and I'm in isolation. I want to thank everyone for their support and messages. I'm confident that I'll get through this and I'll be back on the pitch soon. Stay safe, everyone!"

Matuidi's post was met with support and well-wishes from his fans and fellow footballers, and he has since made a full recovery.