I’ve come across many posts on local community groups on Facebook and on sites like Nextdoor asking for tutor recommendations so that might be one way to get the word out. I should add that at least in our area, most such posters are looking for middle school/high school tutors.
There are also sites like tutors.com, wyzant.com, etc. that may be a good starting points for getting referrals in exchange for a % of fees collected.