I am aware, but you can ignore them as they are not errors. Any game works fine for me with the same error message.
See:
you can safely ignore it. It is not really any error: Steam includes both 64- and 32-bit versions of some libraries and only one version will load successfully. This “error” is displayed even when Steam (and the in-game overlay) is working perfectly.
https://wiki.archlinux.org/title/Steam/Troubleshooting#Wrong_ELF_class
You need to find other some error messages in Steam log and research why games are not launching.
If you can not, can you share us a full output of log.