I mean it largely depends how you define that. I can think of a lot of social ills the government isn't working to solve... poverty, houselessness, poor funding of schools in general, the ongoing deterioration of social programs, but I wouldn't say they're the cause of those issues?

Fact is when you scratch even fingernail deep on any of them you find the private sector, far more often than not. The welfare state is in tatters because numerous components of it have been privatized and are operated by contracted companies who are siphoning off substantial amounts of the utter pittance we dedicate to the problem itself, which means what gets to the people who need it is even more a pittance than it started as.

The houseless issue is perpetuated in part by local governments zoning restrictions and the myriad of issues around building them here, from supplies to labor availability, and also a substantial contributor is the fact that huge amounts of homes are being purchased by investment companies and hoarded either without people in them, or are rented out in which case worker's earned income is being siphoned off to those already far wealthier than they need to be.

Poor funding of schools is often due to a whole mess of factors relating both to how we as a society prioritize education (or don't, more often) and the fact that a school's funding is heavily dependent on property taxes around where it is operating, which means under served areas have less quality schools from the off, which means less educated people with less money to spend, which means less economic activity, which means less property taxes and so on and so forth.

And in all of these and many other problems you have the elephant in the room: lobbying. Corporations spend billions to lobby the government to do even less than it does about these and a bunch of other issues, chief among them to permit said corporations to hold more money, a solid portion of which can then be spent on yet more lobbying. And certainly the government and it's politicians aren't simply helpless patsies in that arrangement, I also would hold the people making the decisions to route that money far more responsible.