You could do what the baby boomers did (since their parents also did not care about their problems) and take matters into your own hands. Complaining on social media isn't enough to change society. Baby boomers didn't like the draft so they dodged/opposed it en mass. Some went to prison for that. They didn't like race relations so they protested, often with violent results...

Millennial and boomer social ideals are near identical but their methods for achieving their goals are wildly different. Boomers took action and Millennials mostly want answers given to them. It also seems like one of Millennial's number one problems (high student debt) is self inflicted. You'll often hear that kids unknowingly took on massive debt for a non-effective degree because "the adults" told them too (parents, teachers, councilors...). The idea being that an 18 year old can't think for themselves. Well, boomers were definitely not listening to their parents when they were 18. Pretty much anything that came from authority was met with distrust and rebellion. Fundamental institution of society were questioned.

I say all of this as a Gen-Xer who has no love for boomers but can at least appreciate that they took action.

Caveat: wild generalizations, individual results may vary.