If you cannot find any unicorns... Go on the map called Valguero. Chalk hills and White Cliffs has alot of unicorns. I once found a lvl 95 male. The next time I went I found a 110 female. It was so great to see a baby unicorn cause their little horn is Soooo cute.
For beginner mobile players, if you happen to come across a unicorn, remember the area in which you found it because come later game, you have to take a picture of a unicorn for a pursuit 👍 I found it once and can’t seem to find it again to take the picture 🤦♂️😔