help setting miullvad vpn+retaing current DNS (adgurad) and inter lan+vlan commu

[popcornpolice]

 HI ALL, I AM trying to set up my opnsense so i can use mullvad vpn to route all of my internet traffic out to the internet with the VPN.
currently,
Brief details on my setup( I DID THE WHOLE SET UP JUST WATCHING YT VIDEOS, I AM A COMPLETE NOOB AT THIS)

-i have opn sense runningby it self on an old dell desktop

-i have my mail LAN with about 5 vlans running
-for DNS, i use adguard home and it be4en great, no problem at all



-ALL OF THIS WORKS AND I AM ABLE TO COMMUNICATE WITH OTHER VLANS ON MY NETWORK AS I PERMIT

MY PROBLEMS

I HAVE BEEN TRYING TO SET UP MULLVARD TO ROUTE ALL OF MY INTERNET TRAFFIC OUT TO THE INTERNET INCLUING THE ONES ON THE VLAN BUT I HAVE BEEN UNABLE TO DO THAT, I TRIED FOLLOWING TWO YT VIDEO ( https://www.youtube.com/watch?v=fFszlJpTBoc&t=29s AND https://www.youtube.com/watch?v=ev3uT-dPSyc )
i can set each of my network like my lan or vlan to each use the gateway, they work but once that happens i loose access to communication with other network like i have been able to, once i set it to use the default gateway, everything start to work normall again.

MY GOAL/WHAT I AM TRYING TO ARCHIVE

1. I want to route all of my internet over mullvard to the internet, and i still want my network to be able to communicate to each other( the ones i allow to do that)

2.i will like to keep adguard as my Dns server( i notice once i set mullvard to be the gateway it hijacks the dns aswell.

this is a link to picture of my configurationhttps://imgur.com/a/pGdxfKj

thank you guys for you helppp.. i will attach picture of my configuration