Config.php Nextcloud

Hi all, i’m new to Umbrel…
i just install umbrel and install nextcloud.
I will access nextcloud from internet using remote.it but i dont know where the config.php of nextcloud to set trusted domain etc.

thanks

In terms of easy of set up and security, it may be easiest to achieve what you want using Tailscale, which is an app on Umbrel as well.