How do I list one filename per output line in Linux?

I’m using ls -a command to get the file names in a directory, but the output is in a single line.

Like this:

.  ..  .bash_history  .ssh  updater_error_log.txt

I need a built-in alternative to get filenames, each on a new line, like this:

.  
..  
.bash_history  
.ssh  
updater_error_log.txt