Steam is a 32 bit application and you can not dynamically load 64 bit libraries with a 32 bit application. This is the expected behavior. You are using your package manager incorrectly or do not have multi-lib support enabled in your distro.
Note: You definitely should not uninstall 64 bit opengl libraries in order to install 32 bit opengl support.
As Tele42 mentions Steam is 32-bit so this is expected. There's already an request for a 64-bit client open here so closing this.
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Your system information
Please describe your issue in as much detail as possible:
I have all libgl files installed but when starting steam it askes for the 32 bit ones which should not be installed a) because I already have the 64 bit version b) because it would remove a lot of important things like xfce applications
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