Can you also check this command to see if the avahi service is running. Then press q to quit.
systemctl status avahi-daemon
Please slow down and just wait! you haven’t installed the printer yet.
Edit: We are getting there slowly! 
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Loaded: loaded (/usr/lib/systemd/system/avahi-daemon.service; enabled;>
Active: active (running) since Sun 2020-10-11 16:49:34 CEST; 54min ago
TriggeredBy: ● avahi-daemon.socket
Main PID: 534 (avahi-daemon)
Status: “avahi-daemon 0.8 starting up.”
Tasks: 2 (limit: 19107)
Memory: 2.7M
CGroup: /system.slice/avahi-daemon.service
├─534 avahi-daemon: running [giuseppe-tobefilledbyoem.local]
└─548 avahi-daemon: chroot helper
ott 11 16:49:34 giuseppe-tobefilledbyoem avahi-daemon[534]: Network interfa>
ott 11 16:49:34 giuseppe-tobefilledbyoem avahi-daemon[534]: Registering new>
ott 11 16:49:34 giuseppe-tobefilledbyoem avahi-daemon[534]: Registering new>
ott 11 16:49:35 giuseppe-tobefilledbyoem avahi-daemon[534]: Server startup >
ott 11 16:49:37 giuseppe-tobefilledbyoem avahi-daemon[534]: Joining mDNS mu>
ott 11 16:49:37 giuseppe-tobefilledbyoem avahi-daemon[534]: New relevant in>
ott 11 16:49:37 giuseppe-tobefilledbyoem avahi-daemon[534]: Registering new>
ott 11 16:49:40 giuseppe-tobefilledbyoem avahi-daemon[534]: Joining mDNS mu>
ott 11 16:49:40 giuseppe-tobefilledbyoem avahi-daemon[534]: New relevant in>
ott 11 16:49:40 giuseppe-tobefilledbyoem avahi-daemon[534]: Registering new>
[giuseppe@giuseppe-tobefilledbyoem ~]$ systemctl status avahi-daemon
this is what came out
Okay perfect. Now i want you to go into the browser whre you have connected to localhost and click on administration.
ok done that
Now click on add printer and a box will open. Type in root for the user name and your password.
Now send me a screen print of that page once you enter root and password in the box and it opens up to the next page.
which one should I choose
Click the box local printer and the bottom one Brother MFC-J430 (Brother MFC-J430)
Edit: Then click continue.
This is going to be local printer on usb.
Show me the page that comes after you do all this?
Click continue
what should I do next ? here the next page 
Select model Brother MFC-J430 CUPS (en)
Then click add printer at the bottom.
Now what do you have on the page?
hold on tying to load the image
I don’t see anything other than set default options. So i guess you can click on the top on printers and see if the printer is listed.