I personally studied ballet for a while, but I can't learn it now ... Then I danced belly dance in the gym, which felt very good and slim, but some soft and tough movements were a bit difficult to master and needed more practice (but many aunts aged 4 or 50 danced in the fitness center, so you can let go, don't worry so much, they didn't learn as well as young people ...)
Hip-hop is also good. Depends on your personality. Dance some dynamic dances if you are lively, and dance ethnic dances if you are introverted.
I suggest you go to leg press every day, get off the bridge, practice flexibility, or do yoga. Because no matter what kind of dance, a little more flexibility is good, which will also make your figure more beautiful.
Fitness center teaching may be easier to understand, and there are Latin national standards, so if you don't know what to study, you can set up a card to see which one you like, and then find some professional institutions to study when you enter the door.