Would you mind to share an example piece of music?

well there was a segment where it looked to be in minor as it didn't have any accidentals that would suggest a different mode, but it said that is was Dorian Mode, but it made no sense

There is a Dorian with just the white piano keys ... D Dorian, is that it?

It would be very important practise to develop an ear for the Tonic or where is the piece yearns to resolve to, without that Tonic we won't know one modus from another

Please share the actual piece so we can consider it together in more detail 🙏