So speaking from experience and a background in education, the most important thing you'll get from uni is yourself. Or more specifically, how you see yourself. Uni (college for you US folk) lets us extend our formative phase and define how we see ourselves and what we'll put out into the world going forward.

So my advice is go easy on yourself, everyone's experience is different and no one's is right or wrong. You mention a lot of great things you did, heading towards graduation with good grades and little/no debt is a huge success, sounds like you're practical, hard-working and smart. Maybe you didn't have the wild ragers, hookups, BFFs that we see in media, but I'd imagine you did have some good social experiences, casual friends, good conversations (even in classes) and the sort of interactions that help you build better relationships later on in life.

Take a deep breath, focus on the positive, which there is plenty even in your short post, and remember you've got a whole exciting life ahead of you, plenty of time for adventures, friendships/relationships, and you've put yourself in a great position to find those.

And I apologize if this sounds preachy or therapisty (and reading comments, it's not far from what others have said too), but I'm basically writing a letter to 22yo me, and at 38 now, trust me, life has been awesome after uni, so congrats on your hard work, power through to the end of the year, and take some time to feel proud of who you are and have become.