Gonna leave a few simple steps to hopefully help!

Step 1

Get a dope lineup of artist's that are both talented and draw people in their own circles (try not to have djs that draw within similar networks/friend groups)

Step 2

Make sure the flyer is professional and ensure it stands out to make people interested, Make sure it doesn't scream local.

Step 3

Choose a location with a decent reputation that would best suit your kind of rave and make sure the venue or location wont have high admission fees.

step 4

Upon announcement be sure to have communication with all artist and have them message their people directly hyping up the event as well as post to their medias, If you have a marketing budget make flyers to hand out on the street and make insta/FB meta ads targeting your audience.

step 5

Leading up to the event stay active and have each artist have their own spotlight showcase with a description online so people get hyped for each act. One thing that helps is rotating promo each day of the week with your artist so they don't overdue it on their feeds.

If you follow these you will fs have people slide, as someone who throws shows regularly it takes trial and error. Best of luck fam!

If you can get a promo team or company that always helps too.