There might be a way for you to have your cake and eat it too.
What I’m hearing is that when they download it and run it (which they appear to be doing - this is a good thing) that they are overwhelmed and/or don’t know how to make it work for them. (If I’ve misunderstood, please let me know.)
I like the recommendation by @brbordallo to offer a “Request a Demo” feature - I think this is an easy short-term “fix”.
As a more long-term solution, maybe consider adding guided tutorials into the software itself based around specific outcomes they want as a result of using the software.
You’d start about by saying “What is it you’d like to do?” and provide some common goals users have for using the software.
Once they pick a scenario, you walk them through either a video demo or an interactive tutorial to show them how to go about achieving their goal.
You can choose to require them to go through an entire set of tutorials before using the software, or let them pick and choose what they want to learn and then dismiss the tutorial modal.
I would keep this information available not just after installation but also through a drop-down menu or something called “Show Me How” or something like that so that if there’s something that comes up later, they can learn how to do it.
You could also have a “Did You Know…” modal on startup with new tips and tricks they could learn from.
Hope this helps some, just trying to brainstorm off the top of my head.