If you had 30k to invest

My little brother (22) is looking to invest his work savings 30k, I want to help him, I want to give him crypto options that have been proven to be functional, with a decent TEAM backing it up and with growth potential.

He wants to throw everything at Bitcoin… I don’t think he can go wrong with Bitcoin in the long run but there’s gotta be something out there with a better return ratio, what would you guys suggest?

Once he buys he will ride the wave for the next ten years (his words) rains or pours

For those who will be commenting … Thank you in advance  we appreciate you taking the time to help us with your knowledge.