Or you can just buy one. https://www.ebay.com/itm/143939358334 for example is $2 and is the private (semi public - all the benefits of private but easy to get). It's the one I use. Buying invites can lead to getting banned but if you're just chilling out on TL then you'll be fine.
A tip for private trackers. Only download new things and freeleech until you build up a buffer (You've uploaded more than you've downloaded)