Well, Cuda, you’ve accumulated experiences most of us won’t ever catch up!
Anyway, it’s never too late to start saving! 401ks employer matching money is free money! Make sure you extract the most out of that. 401k/IRA can also help you save on taxes. So put as much money into it that you can afford.
Within these retirement funds, buy into those market index funds. Meaning that these funds will match trends of overall stock market. Just regularly put away same amount of money and ignore market swings. In the longterm, you should come out ahead.
Another thing you should consider is real estate. Buy as many houses/rental properties that you can afford.
As for cars, like IMOA suggested, only buy cars that’d go up in value!