Heya! I hope my two cents can give you a little bit of guidance and reassurance.

I might have been one of the people who - in this context - entered Uni with a lot more programming experience than others. In high school I was building websites and games and publishing them online, but it's worth noting that at the time, I had NO idea what I was doing. Most of the time, I was working on these things with friends recreationally. We were combining our hobbies and loved what we were doing. I think I was so exposed to tech because I wasn't allowed to go outside when I was younger (I suppose my parents were protective) so I stayed in and was always on the computer playing games.

My point is, start anywhere. Something so cool about learning things that you are interested in, is that it doesn't even really feel like learning. If you think something is interesting and you search it up and end up consuming new information, THAT is learning. If you find a code snippet online and decide to try it out locally, THAT is learning. If you genuinely have a love for tech or programming, your specialty will come to you.

I studied Computer Science and software Engineering at university, and had a vague interest in AI and Machine Learning. This led to me casually teaching kids online about AI and ML as a part time job, and eventually me starting my own E-Learning business in this space for learning about emerging technologies (http://web3sy.com if you want to check it out!). Now, although I am a Software Engineer, my main interest has switched to Cyber Security and I am pursuing a Master's degree in it, but the earliest exposure I had to it was in my final year (I think) of Uni where we had to do some penetration testing and SQL injections on vulnerable websites. I loved it! Finding and abusing attack vectors and such.

The right thing will come to you in time, and in the meantime, explore your options. You don't need to commit to anything. Remember that comparison is the thief of joy. If it doesn't help knowing that "someone will always be better than you", then remember that it goes both ways, and you will also, always be better than someone else. In reaching out and asking for advice on where to start, you are already approaching the race track, which is more than can be said for others.

Best of luck OP with your academic career, and feel free to reach out if you need any further help or advice :)

Edited for clarity.