How did you actually get your first users?

Launched something today. Spent the last few weeks building, finally pushed it live this morning.

Tried to post on Reddit and HN tonight and got nowhere because my account is basically brand new. Emailed a few people in the niche who have audiences. Set up a Product Hunt page for Thursday.

Sitting here at midnight wondering if I've just built something nobody will ever find.

For those who've been through this, what actually got you your first real users? What genuinely worked for you in the first week?

Author: ReasonableNerve560