The problem with stockpiling cash is that it's value gets eaten by inflation. Government figures on inflation seem (at least in my opinion) to be somewhat unreliable. Everyone effectively has their own personal inflation rate depending on what they buy. In my own business, I am seeing suppliers increasing prices by 20-25% year-on-year, not the 9% inflation rate the government claims.
I believe you still need to have a cash reserve, ideally in easy-access interest bearing accounts with two or three different banks. Enough for (say) 6 months of basic bills and expenses. That way, you've got time to respond if you lose your job or are unable to work. It's also a useful reserve for unexpected expenses - if you need a new car, or (as we did a couple of years back) need to pay for urgent structural work on your house.
But once you've got your cash reserve, you should look at how much you can afford to invest, how often, and the situation local to you. A lot of guru's say "buy land or real estate", and while that may be good advice, if you haven't got a large lump sum saved or if property rights in your country are a bit woolly, it's probably not the right investment.
Things you could look at include; land and property, crypto, gold, silver and other commodities, stocks and shares, government bonds, foreign exchange and even day-to-day items (my wife and I joke that toilet paper is "white gold" and when the next crisis hits, we'll put our stash on eBay at £5 a roll.....).
Each of these is a complex subject in it's own right, and not all of them will be right for you. You also need to look at whether each is a long or short term investment and how liquid each one will be; some may not be immediately exchangeable for cash. So all I'll add is the traditional "DYOR" and my own advice that it's better to have a mix of different investments so that if any one of them crashes you don't lose everything.