This is a great time to get into investing, as everything is on sale. It also avoids the trap of starting during a long bull market that makes everyone think they're an investing genius.
In terms of a a simple low-effort method... pick a few asset classes (such as the S&P 500 for US stocks, some bonds, international stocks, etc) choose a percentage to put in each one, and buy some ETFs based on those asset classes and percentages. You don't need to go crazy here, 3-5 of them is likely fine.
Invest systematically each month, don't worry about the price fluctuations.
Every 6-12 months (make a schedule) rebalance things to get back to those percentages you picked (if the stuff isn't still around those levels).
This is very low stress and hands off. The rebalance has you essentially buying relatively low and selling relatively high, without every trying to time the market.
The percentages you choose would be based on risk tolerance and how much time you have to let stuff grow.
I tend to agree with Warren Buffett and Bill Gates on crypto, it's a non-productive asset and your only hope is to sell it to someone who is willing to pay for it than you did (the greater fool theory). In 20-30 years maybe it will be something... or maybe it will be worth nothing and just a funny thing people bring up about the old days. The time between now and then, some people will get rich, while others will lose everything. People chasing FOMO (which sounds like where you're at) tend to be on the losing side of things.
Slow, consistent, systematic growth is basically a sure thing over the long haul and can make you a millionaire pretty easily. You're basically just betting on the US, and the global economy in general, surviving and growing. I know a lot of broke people who have been chasing get rich quick schemes and hot stock tips their whole life and have gotten nowhere.