Although SVB is the second largest bank failure in US history at 209 Billion, if you look at the three banks that failed in the last week: Silvergate, SVB and Signature you get a combined assets of 329 Billion which would be the biggest failure in US history.
If you understand how banks work, buying US bonds to pay interest on deposits then you would understand every bank is in serious trouble. If interest rates are up to about 3% on deposits why would you keep it at a bank paying 0%, yet these banks have many bonds that have lost value, if they sell them they take a heavy loss, but if they keep them they can't afford to pay 3%. This means this a perfect opportunity for a bank to come in and seize market share. When people move money from one bank to another the other bank will have to sell their bonds and realize their losses and perhaps go bankrupt.
This is not just a problem in the US, it is a problem worldwide.
Now combine this with the inflation which is draining people's accounts
And combine this with interest rates on credit cards, car loans, and mortgages rising dramatically and people will have to pull money from their accounts.
And yet, it is even worse than this. Think of all those people who borrowed money against their house. Many of these houses are now selling for 20% less because of the rising interest rates. If you adjust the banks assets on these houses by dropping the value of those mortgages by 20% many, many more will be bankrupt.