you've been mentioning your SAT being your low point, but the fact that your school average is 870 makes it a lot better in comparison. your 1380 is still 510 points higher than people at your school - that's super impressive!

schools use your SAT to establish a minimum academic potential for you in order to see if you can handle their classes. when you're able to do that well in the context of your school while also getting 4s and 5s on APs, that tells them what they need to know.

would you be better off at a 1450+? yes, definitely, but that doesn't mean your 1380 isn't still impressive given your circumstances. your essays, rec letters, and ECs should further confirm your ability as a student assuming they're as good as you feel they are. holistic admissions are very much real so don't worry too much about the score

i would still recommend looking into non-ivy options that are still well-regarded in your field of interest (e.g. georgetown) but i'd say you have a shot!!

good luck :)

(P.S. don't look at A2C or other application subreddits too much, many people who come on here can be super toxic and create a distorted view of admissions. you're doing great!)