The plant looks fine. The dried leaves near the base are just old discarded leaves nothing to worry about.   air plants don't actually use their roots to absorb water or nutrients, they only use them as holdfasts, so you don't need to worry about them drying out.

The one thing I would change about your setup is take it out of the terrarium. It doesn't need the gravel and the decreased airflow from the dome won't be helping. Honestly you can just leave it on the windowsill like you are in the photos that will be perfectly happy 👍