I'm 33. My investment strategy is to not lose money. I invest what I'm willing to lose in assets that either have cashflow, or that I expect to significantly increase (2-100x) in value over the next 1-3 years. I'm invested in various cryptocurrencies and stocks, and receive cashflow from businesses. I do not own index funds or any kind of managed funds.
(FWIW, I would not plan on anything more than 6% p.a. in real terms over the next decade.)
Or did I misunderstand you, in that you put most in conservative investments, and only the fraction that you're willing to lose into wild x100 gambles?