postgresql.conf file been ignored - postgresql

Question

I am trying to allow remote connections to postgresql on ubuntu 19, I first edited postgresql.conf, specifically the parameter listen_addresses, like this:
listen_addresses = '*' # what IP address(es) to listen on;
# comma-separated list of addresses;
# defaults to 'localhost'; use '*' for all
# (change requires restart)
port = 5432 # (change requires restart)
max_connections = 100 # (change requires restart)
as this tutorial says https://blog.bigbinary.com/2016/01/23/configure-postgresql-to-allow-remote-connection.html,
then I restarted the psql server with the following command:
$ service postgresql restart
Following, I edited pg_hba.conf file too adding these two lines at the very end:
host all all 0.0.0.0/0 md5
host all all ::/0 md5
restarted again the psql server. The tutorial says that this should be all but when I do the netstat -nlt command to see if it is already working, netstat shows the following information:
$ netstat -nlt
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:5432 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:1883 0.0.0.0:* LISTEN
tcp6 0 0 ::1:42545 :::* LISTEN
tcp6 0 0 ::1:631 :::* LISTEN
tcp6 0 0 :::1883 :::* LISTEN
when it shoudl be showing something like this, specifically on port 5432:
$ netstat -nlt
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 127.0.0.1:11211 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:5432 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:2812 0.0.0.0:* LISTEN
tcp6 0 0 ::1:11211 :::* LISTEN
tcp6 0 0 :::22 :::* LISTEN
tcp6 0 0 :::5432 :::* LISTEN
tcp6 0 0 ::1:25 :::* LISTEN
I have done some research and it might be something related with postgresql.auto.conf file overwriting the postgresql.conf file, but i could not get further since postgresql.auto.conf only shows this:
# Do not edit this file manually!
# It will be overwritten by the ALTER SYSTEM
I would appreciate some help about this issue, thanks.