Actually, with the new release of Xdebug 3, I have to investigate more why its not working. I don't have much time for that.
The problem was I had this command for vagrant box creation but it does not have any version number.
sudo apt-get install -y php-xdebug
Is there a way to specify the version number to install version 2.9.3
this worked for me. Thank you @LazyOne for help. :-)
sudo apt-get install -y php-pear php7.3-dev
sudo apt install -y php7.3-xdebug
sudo pecl install xdebug-2.9.3