Is there any possible way to recreate uname file in /bin?
Locate the binary file:
$ which uname
/bin/uname
Find out which package provides the file:
$ dpkg -S /bin/uname
coreutils: /bin/uname
Reinstall the package using the --reinstall flag
sudo apt install --reinstall coreutils
This replaces all the files of the package except configuration files.