Start with what gets you most jazzed in your life. Find another person who enjoys the same thing. Engage in that activity with this "friend" and see if you are both drawn towards the idea of dating.
So let's aspire to good sex, but let's put our private parts on hold for a moment while we get some clarity on what an actual relationship might look like with this person. We can't spend more than 1% of our time together in bed.
Parenting is a life journey that I've committed myself to. My partner should have the same orientation. And tennis, being my favorite sport, is a passion that if shared, can unlock a lot of positive feelings and shared time together.