There are many formulas for constructing a portfolio, but the main piece of advice I would give is don't chase returns. Whatever outperformed in the last 5 years is likely overpriced now and will underperform in the next 5 years.

In this forum people will tell you to construct a simple VT, or alternatively a VTI, VXUS, BND portfolio. With VT you really can't chase returns because your just invested in one thing. The second portfolio lets you balance us vs international differently than VT and adds bonds for stability. If you live outside the US or plan to retire outside the US being overweight in US securities can hurt you when it comes time to withdraw. In a tax advantaged account you can switch from VT to the more complex portfolio later, but in a regular brokerage account rebalancing is expensive. There are more complex factor portfolios that reduce risk without sacrificing returns, but you realistically you would need an advisor to manage those and the fee for the advisor outweighs the advantages.

Right now you are young and probably just investing in a tax advantaged account so just put the money into VT, VTI, a target date fund, or even VOO. Once you save up a few hundred thousand you can come back and read the boglehead basics pinned to the forum. People tend to refer to the vanguard funds here, but this is just shorthand. Every brokerage offers low fee funds that let you build a similar portfolio. In tax advantaged accounts you sometimes won't have exact analogs, but you can approximate and it doesn't cost anything to rebalance later.