Marketing new software is impossibly hard.
I have multiple open-source projects and 2 commercial offerings (see: https://race-term.com, https://inboxctl.com and https://github.com/exlee).
With RACE (which is great I use it daily) I have maybe 30 users. With Inboxctl there are (I think) 2 except me.
Recently I figured that there's no reason to work on open source because it's going to be a vaporware even if I set up the whole architecture. With paid software I might (at least) get paid for my time.
But long story short: there are no channels to share/market/show people. HN is hit or miss (most often miss).
Is it good software? Yes. I'm in this industry for more than 2 decades and it ticks all the boxes for "good software". But all the channels where you could meet it are dead waters.