Just buy the S&P 500 or a total market (Russell 3000) fund and let The Market™ sort it out.
Putting a little away every month will generally work out over the long-term (at least of retirement goals):
Yes, I know. I've been hearing Burry make rumblings on this since 2019.
But if Burry is wrong and there is no bubble (with no eventual popping), then by sitting on the sidelines waiting for the (never-to-come pop) you're costing yourself returns:
* https://ofdollarsanddata.com/the-cost-of-waiting/
* https://ofdollarsanddata.com/even-god-couldnt-beat-dollar-co...
And even if there is a bubble, investing and staying invested, will also generally work out fine over the long term:
* https://awealthofcommonsense.com/2014/02/worlds-worst-market...