“I’m just not happy” with no specific complaint about what’s wrong sounds like you’re adjusting, TBH.
Some people are more “portable” than others and adjust to new settings easily. Others need more time. And if the underlying problem is that you’re the sort of person that needs more time, moving schools again would make the problem worse not better.
Work hard in your classes, maybe join another club or social group to get yourself more social. Try not to call home too much and focus on making connections with your professors and peers. And be patient with the acclimation process.