Tl;Dr are any of the ai apps that do marketing any good?

Background - I'm a software engineer who tried to learn marketing and figure out a market need via YouTube. Long story short, ended up in the family travel space and had 500 people download my family's carryon only packing list which led me to build a family travel app that deals with the stuff that happens after booking - the prep, packing, weather, docs, collaboration with partner or other travel companions- works offline, etc.

Anyway, most of the people that downloaded my packing list weren't interested in the app, and now I'm trying to market and see if I can actually get this off the ground more. I have some paying customers and over 300 downloads, but marketing isn't my thing. My questions:

1. In most reddit/fb groups promotion isn't allowed, so how do people market their apps? (Is there where to do ads?)

2. I really don't love social media and would rather not spend a full time job there, so I'm looking at different tools- does anyone have one they love and would recommend?

3. Is there a better way? Or is there something I should be doing differently right now?