"mentality problems" is correct and usable in written English.
You can use it when referring to mental issues or disorders. For example, "He struggled with depression, anxiety, and other mentality problems."
"I don't want to think it's a mentality problem," Almagro said.
"If I have a mentality problem, I think I didn't win the first two sets".
Abu Bakr called this a "mentality" problem, one that wouldn't be solved until the body of the old regime was severed, as well as the head.
"We've struggled against teams near the bottom, which tells me there's a mentality problem".
"We've shown that we struggle against teams at the bottom, which tells me there's a mentality problem".
Employee responsibilities were poorly defined and uncoordinated, creating inefficiency, "frustration," a "fiefdom mentality" and "problem swarming," the tendency for many workers to cluster around a single task.
With "every game an audition", does Neil Lennon need to beat Aberdeen in Sunday's Scottish Cup semi-final en route to securing a Treble Treble to stay on at Celtic? Steven Gerrard must address mentality and midfield problems, and Neil Lennon dare not slip up, as Celtic host Rangers on Sunday, writes Tom English.
Governors say they balance the "inside the Beltway" mentality with pragmatic, problem-solving experience.
America has strong legal protections for people whose credit cards numbers are stolen and historically low fraud rates compared to the rest of the world, so there was a "what's the problem?" mentality here.
It's simply about shifting your perspective from "a problem" mentality to "a possibility" mindset.
