Let get one thing out of the way... there is no magic formula that won't eventually backfire on you. So what do you do?
Make sure your website is set up right for Google to find stuff on it.
You can't avoid this, sorry. You'll have to spend money on Google Ads.
It's always helpful if you can connect with others to promote you.
Use your other sites, social media and more to get more links.
Sorry, there's no easy option to getting found online. Otherwise, everyone would be known!