These days most of us expect to be retired for 30 years or more. You need to be mostly invested in equities to keep up with inflation. Expect your cost of living to be about 4x more in 30 years.
Best solution is a diversified portfolio. The traditional TMF method is to put 5 years of living expenses in a laddered maturity bond portfolio. Each year a bond matures and you replace it be selling some of your equities. If the market tanks you live off the bond and their interest until it recovers and replace those bonds after the market recovers.
Also consider dividend paying stocks as a source of income. Some have a long history of increasing dividends that helps keep up with inflation. And in a down market, dividend helps support share price.