installing Freeradius on Debian 10 (buster)

Hi , I have installed freeradius 3.0 on Debian 10 as follows : #sudo apt-get install freeradius And after that I added the BNG on clinets.conf file , adding a test-user for test on users file ... it doesn't work and making some troubles while restarting the freeradius service with "exit code" error. My questions are : * The above command is enough to install freeradius on Debian 10 (buster)? * I didn't add any MySql databas as it should be part of the package , is not ? * I googled and see some sites that drives to have daloRadius along with Debian , however I understand it shouldn't be and they are fully independent? Thanks, Hazem