re: 10 year old son is a crybaby

Observe the older kids with him. Talk to them about being compassionate towards him. I find that most bullies are bullied at home by older siblings. Parents disregard it as such because they’re siblings and not peers. He could be dealing with that on top of just being a little less emotionally mature than his peers and siblings.
He needs to know it’s ok to be the way he is. He can’t help it. His brain is not developed enough to control it. And if he feels something is fundamentally wrong with him, then that could be a real recipe for mental problems in the future.
And one more thing: not criticizing, we are all guilty of it as parents… but someone suggested you teach him how to “fly the drone.” You said you don’t know how to. Take the time. Learn. And then teach. Not just for the drone, but for anything he may be struggling with. Best of luck to you.