>>717731375
>Kamen rider is super Sentai (Japan power rangers) but for slightly older audiences
No it's not. Rider is more about a solo person granted powers, typically the same as their opponents, to fight against a bigger organization or threat who may make friends along the way. Occasionally there's a small group of people with powers like Ryuki, Gaim, or Geats but that's not typical.
Sentai is more about a group of people with powers fighting an evil group to save the world with mech fights in between.

You're right that Sentai is aiming for a younger demographic which is why Rider does some more serious introspection or themes, but both are still meant for like 8-13 year olds. Sentai tends to be more lighthearted as a whole while Rider tends to be more of a balancing act between lightheartedness and seriousness.