Trump deregulated the banks. Undoing everything Obama had done in the wake of the 2008 Financial Collapse. It was one of the few campaign promises he kept - undoing everything Obama had done. He wasn't completely successful, but banking deregulation was a big one that Trump bragged about.
I don't blame Trump for this one. The bank seems to have made a bunch of really dumb moves because of rising interest rates, that sent the message that the bank in danger of failing, and depositors started an electronic run on the bank over the weekend as a result, so that the FDIC had to take it over midweek, before it really did fail.