@sndhu.rani I’ve tracked Nitro trials a bit, and it looks like Discord ties them to promotional campaigns or partnerships.
For instance, users mention trials coming after subscribing to services like Xbox Game Pass, buying select hardware, or joining events.
A year ago I got one after redeeming a key through a PSN bonus; recently another came via Discord’s developer event email.
These are time-limited and invite-only, so two trials in your case could mean you hit their criteria twice.
If you’ve engaged with partner campaigns, you’re more likely to get it.