Sparkly, that’s the point. If you are going to College, you are an adult. Do whatever you want. You have bechiroh chofshis. Make good choices about where you go and who you associate with. But take personal responsibility for your choices.
It’s your choice to live a positive Torah influenced life, or not.
If you have had a Torah education, in school or at home; if you’ve had a Torah hashpo’oh, at school, shul or at home; if you have yiras shomayim and kovod for your fellow man and woman; if you have a modicum of derech eretz, and a capacity for critical thinking, you are well equipped and should be confident of maintaining your Torah standards (and influencing others) in most environments.
One last observation. You have used the phrase “I heard” this and “I heard” that. You will “hear” many opinions, many hashkafos, and many remarks that may have made sense in the context of a shiur or shmuess, but are otherwise out of context. Again, take responsibility. If you “hear” a Torah perspective, and you want to understand how it can influence your world view, do some research. learn a little, look up sources and come to your own conclusions.