Hi Philippe,
To get wine-32 to work on CentOS 7.6 I had to build and install wine 1.8.4 from a tarball.
Follow the instructions at: https://wiki.winehq.org/Building_Wine
and build the 64-bit version first, then the 32-bit version.
Before building either version I installed the following X11 devel pkgs from yum:
libX11-devel.i686 libxcb-devel.i686 libXext-devel.i686
Depending on your setup on CentOS8 you may need additional X11 devel pkgs, or gecko or others.
Good luck,
--Ed