I just launched on ProductHunt. Here's what I did wrong

Hey Indie Hackers,

A few hours ago I launched my side project, InContact, on ProductHunt, and while I’m proud of getting it out there, the first hours were... a fail.
I’ve learned a few lessons —mainly about what I didn’t do quite right. So in this post, I would like to tell you what I did wrong and give you some proactive feedback on what you should do instead.
Additionally, I'll leave here the link for my ProductHunt launch, so you can see how I did it and take what I did right: https://www.producthunt.com/posts/incontact. Also, if you'd like to upvote it, I would really appreciate it!!
Here’s what I messed up:

Didn’t promote it enough on social media**

I didn’t give enough attention to building anticipation or spreading the word beforehand. It’s easy to assume that ProductHunt traffic will carry your launch, but the truth is, that you need to drive people there actively.
Even if you don't have a big online presence, it doesn't matter. Start writing articles on Medium or IndieHackers and posting on Twitter and LinkedIn. Also, in my experience, Reddit doesn't move a lot of traffic to ProductHunt.

Didn’t engage early enough with the ProductHunt community

While I’ve been a lurker on ProductHunt, I never engaged until launch day. That was a mistake! Building relationships with the community in advance would’ve made a difference in support and visibility.
Spend some time a day (like 30 minutes or so) browsing products, writing comments, upvoting projects, etc. That will build a solid follower base who’ll be the first to upvote your project
In case you didn't know, the first 4 hours are crucial on ProductHunt, so try to exploit them as much as possible.

Forgot to prep my network

I didn’t ask friends, colleagues, or users for feedback or support before launch. Ask your friends and colleagues to create a ProductHunt account if they don't have one and upvote and engage with your launch.
Launches start VERY early (in my country, at 4 am). However, if you ask them as a favor to do it a bit early, I'm sure they won't hesitate to do so.

If you’re about to launch, learn from my experience. Give yourself the best shot by engaging your audience early and often.