need some youtube camera advice

You didn't say how fancy you wanted to go. I use my old Sony Cybershot 7.2 Mega pixel camera for videos. It has a rechargable battery and a removable memory card and has a zoom feature. It also comes with battery charger. They sell for cheap on ebay. I made an offer of $10 (and the offer was accepted) on the last one I bought. If your son accidentally breaks it it's inexpensive to replace and you don't have to get upset about it. My first one lasted 7 years then last year I had to buy the replacement one for $10. Now I have two chargers and a spare battery!! FYI - I also see them on Facebook Marketplace so you might find one locally.
Sony Cyber-shot DSC-W120 7.2MP Digital Camera Package - Silver Works well 27242726697 | eBay

Sony Cyber-Shot DSC-W80 7.2 Megapixel Camera Battery Charger | eBay