Find several real hometown stock brokers or national brokerage firms and charge them with finding the growth stocks of tomorrow, the Nike's, Alphabets, Microsofts. In '73-75 major brand name stocks could be had for $3-5 a share, and there were no tech stocks back then, except maybe defense companies. Held until 2000-2010 they were $200. Viacom comes to mind. Tell the broker that's what you want. Pick a couple real losers, and ask if these would be good - I'm thinking Palantir and Sofi Holdings. If they don't reject those two outright, take your money and run elsewhere.
I'd buy income ETF's - Divided Achievers, Super Dividend, Covered Call Writing - and DRIP with them. In 7-10 years they'll be yielding 15% based on the initial investment. Great ROTH strategy.
I would not ignore diversification. China, India, Eastern Europe will all recover someday. A little indexing opportunity there too.
Always buy quality when it's beaten up and cheap. Find the growth inside the hype. There are themes that work over time. The last 500 years? Transportation, from Columbus to steamship to coal and railroads and airplanes. The last 2000? Energy. Somebody made a bundle on olive oil in ancient Rome. Globalism? Logistics. The movement of goods. For that reason I like UBER. They're not just taxis and take out. And there will be microchips in everything. Intel, Micron, and a dozen others.
But when you're young, you don't want to listen to the old generation. So few will succeed.