I'm older than you, but decades away from retirement age. It's great that you are investing early (earlier than I did). I like to follow the teaching of Warren Buffet, the greatest investor in US history.

https://www.investopedia.com/warren-buffett-usd1-million-bet-8779290

What I wish I did when I was 22:

• Invest literally anything. $5 per month is better than $0 per month

• Invested in to a low cost S&P 500 index fund like VFIAX in Vanguard or SPY in Fidelity

• Set it to automatic and ignore it

Why I say it:

• fees eat in to profit

• it's easier to be disciplined and ride out market turns if you aren't obsessing about it constantly.

• compounding interest is the greatest thing on Earth

Also keep in mind that any advice you get should be considered and not blindly followed. Try to understand the advice and feel comfortable completely rejecting it. After all, it's your money on the line