Your Creative Cloud app controls what language you download.
Set change the language, in Creative Cloud at the top right, there is a flyout menu. Click it and select Preferences. At the top, click Creative Cloud and below it, Apps. Now you can set the language for what version you download. Set it to English and download Photoshop. Because you already have a French version, when Photoshop launches, it will be in French, but you can then switch between languages by click (Mac) Photoshop > Preferences > Interface or (Win) Edit > Preferences > Interface and choosing UI Language (roughly middle of the dialog).
Hope that helps. Please ping us if you need further assistance.