Small businesses are toast. If you work at one, start living like your next paycheck is your last. If you're ambitious, don't start anything brick-and-mortar for the foreseeable future. Either way: find a job that leverages your portable skills, where you can work without needing specific equipment tied down to a single place. Hone your skills to the point where you can conceivably work for yourself, if you get laid off. If you don't have those kinds of skills, start learning one.
The food inflation has been a real thing for years. Stock up on food now, 30 day supply at least, 60 if you can afford it. You don't need to go all prepper level, because stupid people at the top will step in and do stupid things to make sure you can still buy food. Keep 1 spare bottle of every medicine you use.
Don't buy crypto. It's too late, and it's next on the regulatory hit list. Use it only for short term payment transfers, like
tipping some tokens to the Errverlerd.
Buy land. Take out a long term mortgage, if you think you have a job whose wages will scale with inflation. If you're booging out and getting a rural hideaway, make sure you aren't
in a flood zone before paying for that "great deal on acreage".
Opt out of consumerism. Status symbols are dead, tech gadgets have stagnated, and the culture has nothing for you any more. Every dollar you spend on collectibles or plastic crap is a dollar you won't be able to leverage in the near future. Impulse buys are the death of your financial resources. Pick a streaming service or online game that gets you maximum entertainment for a flat fee, or just read a damn book.
Finally: remember that every depression represents an opportunity. Position yourself to make money out of the downturn. Hold cash to buy things that will be cheap, buy things now that will become scarce or expensive in the future. Guess what the rich will buy up (real estate), assume they will be earning and spending boatloads of money on that thing, and front-run that industry.