Another option is to look for LACs with which you are more culturally aligned, and see whether you could transfer. For example, if you are conservative, but not particularly religious, (I’m not saying you are, it’s just an example), than you could see if you could transfer to Washington and Lee college.
On the other hand, at most good state flagship universities, there are a wide range of levels of courses, to match the wide range of students who attend these large universities. Flagships have many opportunities for smart kids, as well as opportunities for students who want to continue on to grad school.
Unfortunately, unlike STEM, “prestige” counts for a lot when applying to grad schools in humanitie (and even more so when looking for faculty positions. Also, many of the “top” grad schools in humanities have culture which align with the most common cultures at the “elite” LACs, which is one of the reasons LACs are the biggest feeder schools to PhD programs. So if the culture of your college is similar to the cultures of these grad schools, it may be worth considering staying and learning how to navigate this culture.
As an aside, “lesser” LACs are often just as big feeder schools to grad school as the more selective ones, or even bigger. So don’t worry about transferring to a lower ranked LAC at which you will feel more comfortable.
When I mentioned “prestige”, it’s not based on things like USNews rankings, but rankings within the discipline. What humanities field interests you? That would help recommendations for undergrads that increase your chances at being accepted to grad school in the humanities.