I don’t know if these will appeal to someone that young, but you can have my short list of good educational content for your consideration:

youtube.com/@smartereveryday youtube.com/@veritasium youtube.com/@crashcourse youtube.com/@tastinghistory youtube.com/@practicalengineeringchannel youtube.com/@brancheducation youtube.com/@asianometry youtube.com/@coolbugfacts youtube.com/@halfasinteresting youtube.com/@tomscottgo youtube.com/@chubbyemu youtube.com/@computerphile youtube.com/@appliedscience youtube.com/@standupmaths youtube.com/@theb1m youtube.com/@britishmuseum