The reason a bank collapse is like dominoes is when a bank collapses you will get a "fire sale" of assets. This means that mortgages, car loans, credit and bonds will all be sold at a discount and that in turn means other banks will be impacted because people will lose confidence in the appraised value of their assets. The regional bank sector has already lost 9-10% of their assets value! When you understand how banks operate (take deposits, buy bonds, pay interest on the loans a little less than the interest they are getting) you can see that this 9=10% indicates they are potentially insolvent.
For an analogy you could describe the situation as a bonfire, all the wood is stacked and in place but as long as no one lights a match you are fine. The problem is that this bonfire has been lit in several places:
1. People are pulling their money out to get higher interest rate in a money market.
2. People are pulling their money out because they see the banks are potentially insolvent.
3. Foreign investment is pulling their money out because of BRICS.
4. When countries saw the sanctions put on Russia they realized their accounts could be next and so some pulled out then.
5. Inflation is causing everyone to have less and less money in savings. There is data showing that more and more people in the US are using credit cards to buy groceries. A practice that is unsustainable.
6. Repos of cars have skyrocketed, in many cases as much as 300%, meanwhile sales of cars are down because of the high interest rate.
7. Foreclosures take longer to work their way through the courts, but will almost surely follow the repo market.
However there is one way to avert the worst case scenario. If we can broker peace in Ukraine, and if the US government can agree to significantly tighten the belt and cut back spending on a very significant scale, then perhaps we could avoid a greater depression than in 1929.