Is there any way to track new threads via RSS or something similar? I have tried to use
https://forums.frontier.co.uk/external.php?type=rss2 but it's so generic, it even contains Jurassic World topics. I'm trying to track Newcomers only :S
Are you using desktop or mobile? In Chrome, for example, when you click on the RSS icon it will offer you either the feed for the whole site or the feed for the individual forum section that you are currently viewing (assuming you are using the official Google RSS extension).
Another way of doing it is to click on the little orange RSS symbol against a forum section when viewing the forum in your browser (you don't see this on the mobile theme). Here:
Alternatively, use the filters in your RSS client to see only the feeds you want. On desktop, I use the excellent RSSOwl (web-based readers are IME crap). For mobile there are plenty of apps to choose from.