The command could not be located because '/bin:/usr/bin' is not included in the PATH environment variable

I've installed ubuntu 20.04.3 lts and i installed anaconda3, i had to uninstall anaconda3 since i some problem accured by just type this command #rm -f anaconda3 from root and /home/user directory. After this i got this trouble given below,

thilipkumar@thilipkumar-Inspiron-5520:~$ sudo -s
[sudo] password for thilipkumar: 
root@thilipkumar-Inspiron-5520:/home/thilipkumar# ls
Command 'ls' is available in the following places
 * /bin/ls
 * /usr/bin/ls
The command could not be located because '/bin:/usr/bin' is not included in the PATH environment variable.
ls: command not found
root@thilipkumar-Inspiron-5520:/home/thilipkumar# 

and in my .bashrc last few lines,

# >>> conda initialize >>>
# !! Contents within this block are managed by 'conda init' !!
__conda_setup="$('/home/thilipkumar/anaconda3/bin/conda' 'shell.bash' 'hook' 2> /dev/null)"
if [ $? -eq 0 ]; then
    eval "$__conda_setup"
else
    if [ -f "/home/thilipkumar/anaconda3/etc/profile.d/conda.sh" ]; then
        . "/home/thilipkumar/anaconda3/etc/profile.d/conda.sh"
    else
        export PATH="/home/thilipkumar/anaconda3/bin:$PATH"
    fi
fi
unset __conda_setup
# <<< conda initialize <<<

can anyone suggest me what to do next?

Check the /root/.profile and /root/.bashrc files of the root user to correct where the path is wrongly set.

You also could revert these files to default by copying the respective files in /etc/skel over to /root.