composer require drush/drush
After that you can use drush in directory /vendor/bin/drush. But if you want to use drush in any directory, you must use Drush Launcher.
Basically, run this command to download drush.phar:
curl -OL https://github.com/drush-ops/drush-launcher/releases/latest/download/drush.phar
Then config the permission:
chmod +x drush.phar
After that, move the file to the location listed on your path:
sudo mv drush.phar /usr/local/bin/drush
If you need to update drush launcher, run this code:
drush self-update
