National Standard Latin: including Cha Cha, Samba, Rumba, Cowboy, Bullfighting, etc.
Modern: tango, waltz, foxtrot, etc.
Ballroom dancing is basically a two-person dance. It is difficult to dance alone and requires a partner. If you can find a good dance partner, you will dance more and more energetically!
Jazz: A more sexy dance that requires the knees to be relaxed so that they can move freely. This is what Lee Hyori dances like. There are also different styles. The jazz danced by Koreans is not the same as that danced by Americans. Some of them incorporate other dance styles, such as modern jazz, modern jazz, hiphop jazz, etc.
Hiphop: that is, street dance, including breaking (can be learned by both men and women), lock dance, bboy (big windmill, played mostly by Thomas Boys), poppin (mechanical dance) and robots.
Modern dance and ballet are also relatively demanding.
No matter what you choose, if you want to dance well, you need to love it, put aside distracting thoughts, integrate into the music, and enjoy dancing. On the contrary, if you don't like this dance style, you will feel like you are "struggle" while dancing. You can start with music, listen to national standards, hip-hop, jazz, that type has a better feel.