you don’t offer enough info.
how do you study: in regular decks or with custom study/filtered decks: If it’s the latter: Did you maybe build it with just this one tag.
Did you maybe suspend all tags except one?
Maybe this is an accident and all non-suspended cards with other tags have longer intervals because you answered them correctly?
Then anking deck is very useful so I’d spend some time to learn about the tool (Anki) you use for it. Maybe ankify some parts of the manual or some good videos (e.g. Anking one, e.g. some videos from the Eric Wulff channel).
This 30 minute video is also very useful: Guide to Anki Intervals and Learning Steps