I want an other type like the GEO font with more styles (light, bold, ...)

Perhaps you can write the designer: Ben Weiner and ask him. The link above is for Medium.
This link is for Regular. https://fonts.google.com/specimen/Geo

He may have some more weights... don't know unless you ask. Though his Reading Type website is no more. Sorry.

Thanks ! I'm goin' to ask him.

Il faudrait que tu cherches dans le thème Techno > Carré.
En cochant l'option "voir les variantes", tu peux rapidement voir celles qui ont des styles différents (ce qui est assez rare dans les polices fantaisie).
http://www.dafont.com/fr/theme.php?cat=301&page=2&fpp=50&af=on&text=ABC+abc

He's a Brit - I found his contact details. If you haven't already. When I tried yesterday, the link I had found was an American .com - and did not work. This one does.

https://readingtype.org.uk/about/contact.html

Thanks for the share