It’s all based on the math and XSS targets versus your signature and current settings.
Start here if a beginner and feel free to post your profile so we can best answer your questions –
Beginner questions - Support - Xert Community Forum (xertonline.com)
There are lots of newbie tips in that thread so read through it when you have a chance.
In the meantime if you aren’t really tired click Goals and drag the FF slider (Freshness Feedback) to the right a bit and click Update Advice. The recommendations will change.
You can also take a look at the Planner to see what day XATA predicts your freshness will return.
It is not usual to sit at tired after any workout or very tired after a tough ride/workout. The idea is XATA won’t recommend a hard workout again until you have recovered.
The upper stars color reflects your current predicted freshness while the triangle in the pacer needle below reflects 24 hours from now.
The FF slider is Xert’s way to say how you actually feel versus the prediction.
Some cyclists recover quickly while others do not (age, experience, current fitness, etc.).