there is a simple trick old Jack uses day in and day out. So far it worked.
Bank where a large percentage of the local voting plebs do banking too, be it a popular broker, and do their to︀ day banking. (talk to those people which at the end of their salary, still have︁ some month left).
Be extra careful, if institution is popular with non-resident foreigners but not︂ locals.
Be careful with specialized / niche-branded banks, like crypto-banks, startup banks, hookas banks 😉.
Id also be careful with only private banks, but they can be ok if run︃ ideally by the founding partners ideally in the form of a partnership.
Id prefer the︄ private banking branch of a pleb bank.
Flowbank was not popular at all for example,︅ but credit suisse is/was (thats why credit suisse the plebs didnt even notice it went︆ down, while flowbank is rekt).