1. Forget the term "playdate". Don't schedule your kids' time to play with other children. I know it sounds strange, but adults used to have adult lives and people would just go visit each other. Their kids would play together while the adults did their thing.
2. Don't post pictures of your kid all the time on social media. No one really cares. Sorry. Send those pictures to your parents or friends directly. Better yet, go over to visit them and show them pictures in person. If you can, drop social media as much as you can stand, and just enjoy the fact that you love your child as much as every parent without turning parenting into social signalling and narcissistic indulgence.
3. Remember that your kids will leave you. They will go away to preschool, grade school, maybe college. And then one day, they will leave for the last time to set out on their own. Yes, you need to protect them, but if you are fearful and see the world as ugly, your kids will sense that growing up and most likely feel the same way. Do you want to send them out to the wide world with a viewpoint that the world is a scary place? Is the world a scary place? Why did the world turn ugly and scary when you had a child?
These are just my opinions, and there is no wrong way to do it. There's all sorts of ways of living. I just hope you find something that gives you some faith in your ability to raise a child that will turn out just fine. Because he or she will.