I'm wary about even Googling it because I swear I heard you are tracked in the US for even Googling it, or downloading it, or even reading on Wikipedia. It sounds laughable when I type it to be honest, but hey. I feel I have better hills to die on.
Balisong trainer knife (not sharp) for 20 bucks. It's more like a fun toy I play with. I easily have dozens of hours just playing with this thing and learning new tricks.
I think everyone in the tech industry mentions imposter syndrome so much that it's either not the problem here, or OP has heard it so often that they're deaf to it.
Kids also need time away from computers, TV, etc., I'd think. Unless they have some condition where they literally can't leave the house, or do much else every day... If you're a normal kid, you should use the opportunity to go outside, see the world, talk to people, etc.