Hi,

Could someone help me to identify this fonts ?

Roboto  Suggérée par akira1975 
Bree Serif  Suggérée par akira1975 

The characters in white are set in one of the older versions of Roboto.
https://www.dafont.com/roboto.font

The latest version:
https://fonts.google.com/specimen/Roboto

The slab serif is Bree Serif.
https://www.type-together.com/bree-serif-font
https://fonts.google.com/specimen/Bree+Serif