Broadly speaking, you have 3 options.
Option 1
Educate yourself on investing, write an investment policy statement, and invest according to it. This is what most people on this forum do and suggest.
Option 2
Blindly follow some allocation you read about but don't understand. Don't do this.
Option 3
Invest in a target fund or a broad index fund (like the total market funds you mention) and tune out the barrage of investment news and advice you see on TV and on the web. There is nothing wrong with this option, and you can always switch later, as long as you don't switch to option 2!