I don't know how many people here are actively selling their own games, but I just thought I'd mention that while people are all stuck at home, they may be looking for things to do. Not a bad time to, say, run Facebook ads.
If you do run Facebook ads, here's my non-expert suggestion on how to get a good result:
Get a Facebook pixel and set it up on your website (follow online instructions!)
Set up a good audience as normal (assuming you've done this before), like: people 18-50, who are married, who also list "tabletop games" or "board games" in their Likes. Whatever.
Attach the Facebook pixel to the Facebook ad(s) you run. This lets FB track which users actually hit your site.
After a week or so, when you have at least 1000 visitors to your site, create a "custom audience" which is "people who have visited your site." Then create a "lookalike audience" which is the 1% of FB users who best match that custom audience. This step may take like 12 hours to actually complete.
Then run your ads to that lookalike audience.
I literally doubled the click rate of my first ad(s) with that lookalike audience. Which is a little scary.
Not sure what you mean by focus from FB to KS. I mean, you could run a FB ad that pointed to the KS, and then I think you could track people who at least got to the page.. not sure if you could record people who backed after following the link, but maybe. If so, you could then make a custom audience out of those..