The risk isn’t worth it to most unless you are really desperate for a stay in the fed. At least you get fed and don’t sleep unsheltered.

Caught by a fed and thrown in the fed where at least you get fed.

Assuming you don't get caught, which if you keep on bank robbing probably increases the odds you do.

or be a politician. they seem to make a lot of $ for little work

They do work. Just not the work you want them to do.

bank robbery is automatically upgraded to the FBI and has (IIRC) a minimum sentence of 7 years, worse if you use a real weapon. I'm sure there are other ways to commit a petty offense or 2 that would net the same amount with less risk.

Robbery has an under 25% clearance rate, but bank robbery has an over 60% clearance rate—the median bank robber gets prison (yes, 80% of stolen funds aren’t recovered, but how much of a prison term js getting away with $7,500 worth?)

Robbery is often committed by a single person. Bank robbery generally requires multiple, and often results in multiple charges per crime (which can skew clearance rates)

"You'll also likely have more people to split the money with" is further eroding the appeal of the $7,500 take.

If bank robbery is less profitable than working for a minimum salary then why people do it?

Because as should be obvious to the most casual observer, assuming rationality combined with financially-return-focused utility functions produces a model of human behavior that bears basically no relationship to reality. (Which is more an answer to why the prior underlying your question is silly than it is an answer to the question, but...)

My brother is a detective. One of the early, surprising discoveries in career is that most criminals are dumb, fully driven by their Id. Basically, people driven by getting drugs or getting laid.