OK, good.
I have numerous terrariums and keep mine potted, in tall, large terrariums. Have four of these for plants that require higher humidity.
Humidifiers normally do not do a plant much good, since the slightest breeze dissipates the mist from the humidifier.
If you want to try a humidifier, get a mini one like this: https://www.amazon.com/USB-Powered-Humidifiers-Bedroom-Humidifier-moisturizer/dp/B08S16MQNN, that can go directly under the plant and turns off automatically when the water runs out.
I have a calathea and they react really terribly to not being in humidity, namely in that they probably will get spider mites when they get too dry. (Happened almost immediately to mine). My solution was to buy a really small, cheap humidifier and plug it in right next to the plant. This is the one I got but there are plenty of similar ones under 10 dollars. I live in an old apartment and blasting the heat to combat the Illinois weather all winter certainly didn’t help, you might actually get better luck than me with these guys.
Generies Brands USB-Powered Mini Humidifiers for Bedroom Baby Home Office Car with LED,Air Humidifier for Facial moisturizer (White)https://www.amazon.com/dp/B08S16MQNN/ref=cm_sw_r_cp_api_i_DQNGYNYHXRR1WB20Y3JW?_encoding=UTF8&psc=1